Allies of Vice President JD Vance harshly criticized Senator Rand Paul on Tuesday after Paul publicly rebuked Vance for endorsing President Donald Trump’s decision to destroy a boat said to be carrying illegal narcotics.

The confrontation began after Vance posted that "killing cartel members who poison our fellow citizens is the highest and best use of our military," a comment that drew an immediate response from Paul, who called the sentiment "despicable and thoughtless" and asked whether Vance had "ever read To Kill a Mockingbird." Paul told reporters he was "really ticked off" and said Vance was glorifying killing people without trial and showing "a disdain for human life and a disdain for processes."

A source close to the vice president told the Daily Mail that Vance supports what the source called the "Trump doctrine" of using "overwhelming force to protect core American interests and save American lives." Supporters noted Vance’s personal connection to drug policy: his mother struggled with addiction during his childhood, the source said.

Vance allies labeled Paul a hypocrite for past comments defending a 2015 drone strike during the Obama administration that unintentionally killed two hostages. At the time, Paul described the incident as occurring in a war zone and said the administration was "trying to do the right thing," remarks cited by Vance supporters in their counterattack. "During his failed run for president [he] defended Obama droning American citizens without due process, but now is sticking up for foreign terrorists," the source said, adding that Paul suffers from "Trump Derangement Syndrome." A Daily Mail request for comment from Paul’s office was not returned, the report said.

The dispute follows a weekend strike the White House said targeted a vessel in the southern Caribbean that was transporting illegal drugs from Venezuela toward the United States. President Trump said U.S. forces destroyed the vessel in international waters and that 11 "narcoterrorists" were killed. The administration framed the attack as a message to drug cartels that their efforts to traffic narcotics would not be tolerated.

Senator Bernie Moreno, a Trump ally, defended Vance on social media, calling it "despicable" to defend traffickers who are "directly responsible for the deaths of hundreds of thousands of Americans in Kentucky and Ohio," and saying Vance understands that protecting "the life and liberty of American citizens" is the first responsibility of government.

Paul, a Kentucky Republican known for libertarian-leaning positions on military force and civil liberties, has clashed with President Trump on multiple issues, including tariff policy and the use of federal troops in U.S. cities. Trump has previously called Paul "the toughest vote in the history of the U.S. Senate;" Paul voted against the administration’s major spending bill, criticizing its size and scope.

The exchange adds to ongoing tensions within the Republican coalition over how aggressively to confront transnational criminal networks and what role the military should play in drug interdiction. Vance’s explicit endorsement of lethal force drew rapid criticism from a senator who has long argued for limits on executive power and military action, illustrating a widening debate inside the party over security, due process and presidential authority.

It was not clear as of Tuesday whether the public spat would have lasting policy implications. The administration has defended the strike as lawful and necessary; some Republican allies echoed that defense while others emphasized constitutional and humanitarian concerns about killing suspects without trial. The internal GOP debate appears likely to continue as lawmakers weigh border security proposals and possible additional actions targeting international drug trafficking.