WASHINGTON, July 25 (Reuters) - U.S. President Donald Trump is unlikely to follow through on his threat to place 100% tariffs on countries that buy Russian oil because it would worsen politically-damaging inflation pressures and his similar threat against buyers of Venezuelan oil has had limited success, especially in China.

Retired Air Force Gen. Charles Wald joins 'Fox News Live' to weigh in on Russia's increased attacks on Ukraine despite President Donald Trump's ultimatum to Vladimir Putin.

Russian President Vladimir Putin has laughed off President Donald Trump‘s demand for a ceasefire with Ukraine within 50 days, Knewz.com can report. Trump’s support of Putin seems to have lessened – something critics credit to “Agent Melania” Trump and her influence on the president’s plans.

By Steve Holland, Matt Spetalnick and Jonathan Landay WASHINGTON (Reuters) -U.S. President Donald Trump accused former President Barack Obama of "treason" on Tuesday, accusing him, without providing evidence,

Obama's debt to Trump in the current president's mind? That the U.S. Supreme Court ruled last year that presidents have immunity for official acts.

Former DNI James Clapper denied President Trump's claims that the Obama administration committed "treason" and misled the public about Russia's attempted interference in the 2016 election, calling it "ridiculous" and "untrue".