Russia Escalated Sabotage to Pressure U.S. and Allies on Ukraine, Study Says

Anger at Russia’s covert efforts, which included targeting undersea cables, warehouses and railways, has the potential to influence European reactions to the U.S.-led push for an end to the war.

U.S. to Withdraw From Group Investigating Responsibility for Ukraine Invasion

The decision is the latest indication of the Trump administration’s move away from holding President Vladimir V. Putin of Russia accountable for crimes committed against Ukrainians.

As Trump’s Untested Emissary to Putin, Witkoff’s Role May Bring Risk

The real estate developer and president’s friend lacks diplomatic experience, but the new administration might view that as a plus.

Rubio Says a Cease-Fire in Ukraine Could Happen in ‘Days’ if Russia Agrees

Secretary of State Marco Rubio said top diplomats from the Group of 7 allies meeting in Canada should focus on ending the war. And he shrugged off President Trump’s threats to annex Canada.

Trump’s Decision to Halt Aid to Ukraine Could Reorder the Battlefield

Officials have suggested that the pause in weapons shipments and intelligence sharing could be relatively short-lived if Ukraine’s president bends to White House demands.

C.I.A. Director Says U.S. Has Paused Intelligence Sharing With Ukraine

Trump administration officials say the halt in assistance is a warning to the Ukrainians of the consequences of not cooperating with the president.

Trump Celebrates Disruption in Speech to Congress, and Avoids the Costs

The president’s speech to Congress covered tariffs, Ukraine and cuts to the federal work force but did little to address the perils that accompany the abrupt shifts he has engineered.