Sen. Chuck Grassley (R-Iowa) believes it is time for President Trump to throw his support behind sanctions against Moscow in order to tell Russian President Vladimir Putin it’s “game over,” as peace talks to end the war in Ukraine stall.

“I believe president trump was sincere when he thought his friendship w Putin wld end the war,” Grassley posted Tuesday on social platform X using his unique parlance. “Now that being the case ITS TIME FOR SANCTIONS STRONG ENUF SO PUTIN KNOWS ‘game over.’”

The longtime Iowa Republican has been increasingly beating the drum calling for an uptick in sanctions against Russia as the Kremlin has shown few signs of being willing to make a deal to end the war. 

On Sunday, Grassley wrote on X that he has “had enuf of Putin killing innocent” people and urged Trump to look into sanctions.

A bipartisan group of senators has prepared a sanctions package that has garnered support from more than 80 members. The measure includes a 500 percent tariff on imports from nations that purchase Russian oil, petroleum products, natural gas or uranium, Bloomberg News reported. 

The sanctions calls come as Trump has become increasingly vocal in questioning Putin’s motives, saying Sunday that the Russian leader has gone “crazy.”

“I’ve always had a very good relationship with Vladimir Putin of Russia, but something has happened to him. He has gone absolutely CRAZY!” Trump wrote on Truth Social. “He is needlessly killing a lot of people, and I’m not just talking about soldiers. Missiles and drones are being shot into Cities in Ukraine, for no reason whatsoever.”

“I’ve always said that he wants ALL of Ukraine, not just a piece of it, and maybe that’s proving to be right, but if he does, it will lead to the downfall of Russia!” he added.

The Kremlin responded Monday to Trump’s criticism by blaming it on “emotional overload.” The back-and-forth comes as Russia continued its strikes on Ukraine over the weekend and seized at least four villages on the northwestern border.

Trump and Putin held a two-hour call last week that prompted the U.S. to take a step back in talks.

Those negotiations started earlier in the month, but did not get off the ground as Russia sent low-level officials, prompting Ukrainian President Volodymyr Zelensky to withhold his own attendance. 

Russia also did not agree to a 30-day ceasefire, which Trump and Zelensky were pushing for.