Republican Senator Lindsey Graham issued a warning to Russia regarding potential escalation, responding to threats made by Dmitry Medvedev against the United States.

Graham wrote on social media platform X that President Donald Trump does not seek conflict but stands ready for decisive action if necessary.

“To my friends in Russia: President Trump seeks peace not conflict. However, please understand that he is not Obama, he is not Biden, and he will not be trifled with. You are overplaying your hand,” Graham wrote.

The US President previously announced on Truth Social that he ordered the deployment of two nuclear submarines to appropriate regions following provocative statements by Deputy Chairman of Russia’s Security Council Dmitry Medvedev.

Trump explained that he “was forced to do this” to protect the American people.

Earlier, Medvedev published a post mentioning the Soviet automatic nuclear strike system known as “Dead Hand” and called on Trump to “remember his favorite zombie movies.”

Previously, Medvedev claimed that Trump “is playing a game of ultimatums with Russia.” He added that “every new ultimatum is a threat and a step toward war.”

President Donald Trump has expressed earlier growing frustration with Russia’s continued attacks on Ukraine. Trump, who initially adopted a more conciliatory approach toward Moscow while attempting to end the three-year war, has now threatened to impose tariffs and other measures if Russia shows no progress toward ending the war by 8 August.