U.S. President Donald Trump unexpectedly shortened his deadline for hitting Russia with the most severe sanctions on its oil exports to date. While the market has called the president’s bluff thus far,

President Donald Trump, saying he was “disappointed” in Russian President Vladimir Putin, announced Monday he would shorten the deadline for Russia and Ukraine to reach a ceasefire agreement, intensifying his threat to impose new economic sanctions on Moscow.

President Trump said he had decided to shorten a 50-day deadline he had given Russia to end the conflict or face punishing new sanctions.