Lawfare is the strategic use of legal systems — lawsuits, investigations, regulatory complaints, and procedural maneuvers — to achieve goals that would otherwise require force, political power, or direct economic competition. Air Force Colonel Charles Dunlap popularized the term in a 2001 paper, first describing it as “the use of law as a weapon of war” and later broadening the definition to cover any strategy that uses or misuses law as a substitute for traditional military means. The idea has since outgrown the battlefield. Today it describes what happens any time a party treats a courtroom filing as a tool of pressure rather than a genuine pursuit of justice, whether the arena is a presidential campaign, a patent dispute, or a negative Yelp review.
The common thread is that the process itself is the punishment. A case that eventually gets dismissed can still drain months of time, hundreds of thousands of dollars, and a defendant’s public reputation before a judge ever rules. That cost structure is the point.
Lawfare in Domestic Politics
Political actors use lawsuits, grand jury investigations, and ballot challenges to gain advantages that campaigning alone could not deliver. A civil suit or criminal indictment can consume a candidate’s time, attention, and treasury. The resulting headlines shape public perception long before any verdict, and the candidate ends up answering charges instead of talking about policy. A politician facing federal racketeering or fraud charges may spend millions on defense attorneys while an opponent campaigns unopposed in key media markets.
Discovery amplifies the damage. A subpoena demanding thousands of internal emails and strategy documents can tie up a political organization’s staff for months. Federal rules require that subpoenas not impose undue burden, but even a successful challenge to an overbroad request costs real time and legal fees.
Courts can also reshape elections directly. A judge may enjoin certain campaign activities or uphold an eligibility challenge that removes a candidate from the ballot. The threat of felony charges carrying years of prison creates pressure to withdraw from public life entirely. When the legal system becomes a campaign weapon, the line between legitimate law enforcement and strategic harassment gets uncomfortably blurry.
Military and International Lawfare
On the international stage, states use legal institutions to constrain adversaries without firing a shot. The International Criminal Court can open war crimes investigations through a referral from a member state, a Security Council resolution under Chapter VII of the UN Charter, or the ICC Prosecutor acting on information received independently.1OHCHR. Rome Statute of the International Criminal Court A country facing such an investigation may see its military leadership restricted in travel and its alliances strained well before formal charges materialize.
The International Court of Justice offers another venue. States that accept its compulsory jurisdiction can be drawn into disputes over treaty interpretation and the extent of sovereign authority.2INTERNATIONAL COURT OF JUSTICE. Basis of the Court’s Jurisdiction Filing a case there creates a legal narrative of wrongdoing that can erode allied support for a military campaign even when the merits take years to resolve.
Allegations of Geneva Convention violations carry particular weight. Grave breaches trigger an obligation on all signatory states to prosecute those responsible under the principle of universal jurisdiction, meaning an accused commander could face prosecution not just at home or at the ICC but in any country that has ratified the Conventions. States also invoke legal frameworks to justify their own actions. Article 51 of the UN Charter preserves every member’s inherent right to individual or collective self-defense when an armed attack occurs, until the Security Council takes necessary measures to maintain peace.3United Nations. Charter of the United Nations – Article 51 Framing an operation as Article 51 self-defense provides legal cover that can deter third-party intervention. Non-state actors, in turn, routinely accuse professional militaries of disproportionate force in civilian areas to trigger international inquiries. Both sides treat international law as a strategic asset.
Corporate Competitive Litigation
Businesses weaponize lawsuits to protect market share. Patent infringement suits can block a competitor’s product launch for years, with pre-trial legal costs running into the hundreds of thousands or millions. When a company proves trademark infringement or false advertising under the Lanham Act, the court can issue a permanent injunction halting the activity.4Office of the Law Revision Counsel. 15 US Code 1116 – Injunctive Relief The Act covers both misleading claims about a competitor’s products and false representations about one’s own goods in commercial advertising.5Office of the Law Revision Counsel. 15 USC 1125 – False Designations of Origin and False Descriptions A successful injunction can shut down production lines and pull a competing brand off shelves.
Antitrust enforcement adds another lever. Large corporations may push federal regulators to investigate a smaller competitor’s pricing or exclusivity arrangements. When the FTC or DOJ issues a Second Request for documents during a merger review, compliance costs routinely run into millions for the target company. That drains the capital a mid-sized firm needs for growth. Prolonged litigation often ends in settlements that reshape the competitive landscape, with a smaller company agreeing to exit certain segments or pay ongoing royalties that eat into its margins.
The Sham Litigation Exception
There are limits. Under the Noerr-Pennington doctrine, businesses are generally immune from antitrust liability when they petition the government, including through litigation. That protection vanishes when the lawsuit qualifies as a “sham.” The Supreme Court laid out a two-part test: first, the lawsuit must be objectively baseless, meaning no reasonable party could realistically expect to win on the merits. Only if that threshold is met does a court examine whether the filer’s true purpose was to interfere directly with a competitor’s business through the litigation process itself, rather than through any legitimate legal outcome.6Legal Information Institute. Professional Real Estate Investors Inc v Columbia Pictures, 508 US 49 A company caught filing sham litigation loses its antitrust shield and can face liability on top of losing the original case.
SLAPP Suits Against Public Speech
A SLAPP suit — Strategic Lawsuit Against Public Participation — is one of the most recognizable forms of lawfare. The plaintiff files a defamation, tortious interference, or similar claim not to win but to bury a critic in legal costs. The real objective is silence.
SLAPP suits target journalists, community activists, online reviewers, whistleblowers, and anyone else whose public speech inconveniences a well-resourced party. The underlying claims rarely have genuine merit, but the defendant still has to hire a lawyer, respond to discovery, and endure months or years of proceedings. A case that eventually gets thrown out can still cost tens of thousands of dollars to defend, and that is the point.
As of mid-2025, thirty-eight states and the District of Columbia have enacted anti-SLAPP laws. Under most of these statutes, the defendant files a motion to strike on the grounds that the suit targets speech on a matter of public concern. The burden then shifts to the plaintiff to demonstrate a realistic probability of winning. If the plaintiff falls short, the case is dismissed early and most anti-SLAPP statutes require the plaintiff to pay the defendant’s attorney’s fees. No federal anti-SLAPP law currently exists. That gap means protection in federal court depends on whether the presiding judge applies the relevant state’s anti-SLAPP statute, an issue different federal circuits have answered differently.
When Strategic Litigation Is Legitimate
Not every strategic use of the courts is abusive. Advocacy groups have long used impact litigation to achieve reforms that stalled in legislatures. A single ruling from a high court can strike down laws across the country, bypassing the need for a legislative majority. This approach has driven some of the most consequential changes in American law, from school desegregation to marriage equality.
These cases frequently target government agencies, seeking court orders that compel enforcement of existing regulations or adoption of new practices. When a court finds that an agency has systematically failed its legal obligations, it may enter a consent decree and appoint a monitor to oversee compliance. The Department of Justice has used this approach in cases involving unconstitutional policing, inhumane conditions in public institutions, and disability rights violations.7United States Department of Justice. Review of the Use of Monitors in Civil Settlement Agreements and Consent Decrees Involving State and Local Government Smaller organizations and individuals who prevail against the federal government can recover their legal fees under the Equal Access to Justice Act, subject to statutory net-worth and size caps.8Office of the Law Revision Counsel. 28 USC 2412 – Costs and Fees That fee-shifting mechanism makes it financially viable for small groups to challenge government overreach without risking bankruptcy.
Defenses Against Abusive Litigation
The legal system has built-in mechanisms to punish litigants and attorneys who abuse it. These tools rarely get the attention they deserve, partly because targets of lawfare are often too overwhelmed by the immediate crisis to think about counterattack. Knowing they exist changes the calculus for both sides.
Rule 11 Sanctions
Federal Rule of Civil Procedure 11 requires every attorney or unrepresented party who signs a court filing to certify that it is not being presented to harass, cause unnecessary delay, or needlessly increase litigation costs. The filing must be supported by existing law or a reasonable argument for changing the law, and any factual claims must have evidentiary support or a legitimate basis for believing they will after further investigation.9Legal Information Institute. Federal Rules of Civil Procedure Rule 11 – Signing Pleadings, Motions, and Other Papers; Representations to the Court; Sanctions When a court finds a violation, it can impose sanctions ranging from monetary penalties to orders restricting future filings. The sanction must be tailored to deter the conduct, not simply to punish. A party served with a Rule 11 motion has 21 days to withdraw the offending filing before the motion can be submitted to the court.
Personal Liability for Attorneys
Federal law also holds attorneys personally accountable when they unreasonably drag out proceedings. Under 28 U.S.C. § 1927, any attorney who multiplies proceedings in a case unreasonably and vexatiously can be ordered to personally pay the excess costs, expenses, and attorney’s fees that their conduct caused.10Office of the Law Revision Counsel. 28 USC 1927 – Counsel’s Liability for Excessive Costs This provision hits the attorney’s own finances, not the client’s. It gives judges a tool to punish the lawyer who is actually orchestrating the abuse, which matters because in most lawfare scenarios the attorney is the strategist, not just the messenger.
Vexatious Litigant Orders
For serial abusers, courts can impose the most drastic remedy available: a pre-filing injunction. A federal court may declare a litigant vexatious and require them to obtain court approval before filing any new case. Courts derive this authority from Federal Rule of Civil Procedure 11 and the All Writs Act. Before issuing such an order, the court reviews the litigant’s filing history and balances the fundamental right of access to courts against the need to prevent ongoing abuse. These orders are rare precisely because the right to file a lawsuit is constitutionally protected. When a pattern of baseless filings is clear, though, they effectively shut down a serial litigant’s ability to weaponize the court system.