President TrumpDonald TrumpCIA chief threatened to resign over push to install Trump loyalist as deputy: report Azar in departure letter says Capitol riot threatens to 'tarnish' administration's accomplishments Justice Dept. argues Trump should get immunity from rape accuser's lawsuit MORE said his order to launch the drone strike that killed Iranian Gen. Qassem Soleimani came amid pressure from Senate Republicans he views as key allies in his upcoming impeachment trial, The Wall Street Journal reported and The New York Times reported this week.

The articles did not name the GOP senators, but many of Trump's allies in the Senate, including Sen. Lindsey GrahamLindsey Olin GrahamThe Hill's Morning Report - Biden asks Congress to expand largest relief response in U.S. history McConnell about to school Trump on political power for the last time Additional airlines ban guns on flights to DC ahead of inauguration MORE (R-S.C.), have praised his decision to take out the Quds Force commander in Baghdad.

Graham, an Iran hawk who is also chairman of the Senate Judiciary Committee, has been outspoken in his support of Trump's strike on Soleimani and in his opposition to Trump's impeachment.

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The New York Times reported that Trump said on a phone call that he had been under pressure by some Senate Republicans to take a harder line on Iran.

Though many GOP senators have voiced their support for Trump's actions in Iraq, three House Republicans on Thursday voted with Democrats on a measure to limit the president's military powers. Among them was Rep. Matt GaetzMatthew (Matt) GaetzThe Memo: Historic vote leaves Trump more isolated than ever Top Republican congressional aide resigns, rips GOP lawmakers who objected to Biden win House GOP leader tells members to quit spreading lies on riot, antifa MORE (R-Fla.), one of the president’s biggest supporters during the House impeachment hearings.

Some Senate Republicans have also pushed back on Trump's military authority. Sen. Rand PaulRandal (Rand) Howard PaulMcConnell about to school Trump on political power for the last time Legislatures boost security after insurrection, FBI warnings Former Missouri senator says backing Hawley was 'worst mistake of my life' MORE (R-Ky.) in particular has questioned the administration's use of a 2002 authorization as the basis for the drone strike in Baghdad that killed Soleimani.