TOPSHOT - An Iranian woman walks past an anti-US billboard at Enghelab Square in central Tehran on August 3, 2026. Iran denied any negotiations were taking place with the United States after the US president said new talks would begin on August 3 in an effort to end their war, now in its sixth month. Washington and Tehran have been at war since February 28, when the US and Israel launched surprise strikes against Iran, though months of on-off diplomacy have led to periods of relative calm. (Photo by ATTA KENARE / AFP via Getty Images) /

(FILES) Ukraine Ambassador to the United States Olha Stefanishyna speaks at the Ukraine Embassy in Washington, DC, on February 24, 2026. Ukrainian President Volodymyr Zelensky has on August 3, 2026, dismissed his ambassador to the United States, Olga Stefanishyna, in a move that had been expected following a government reshuffle last month. (Photo by Maria DANILOVA / AFP via Getty Images)

(FILES) Ukrainian Ambassador to the United States Olha Stefanishyna testifies during a Senate Appropriations Subcommittee on State, Foreign Operations and Related Programs hearing titled "The Abduction of Ukrainian Children by the Russian Federation" on Capitol Hill, in Washington, DC on December 3, 2025. Ukrainian President Volodymyr Zelensky has on August 3, 2026, dismissed his ambassador to the United States, Olga Stefanishyna, in a move that had been expected following a government reshuffle last month. (Photo by Jim WATSON / AFP via Getty Images)

WASHINGTON, DC - AUGUST 03: U.S. Senate Majority Leader John Thune (R-SD) talks to reporters as he walks into his office at the U.S. Capitol on August 03, 2026 in Washington, DC. The Senate is starting its final week before their five-week summer recess and are expected to hold a vote on the nomination of President Donald Trump's nominee for Attorney General, Todd Blanche, in the coming days. (Photo by Kevin Dietsch/Getty Images)

WASHINGTON, DC - AUGUST 03: U.S. Senate Majority Leader John Thune (R-SD) talks to reporters as he walks into his office at the U.S. Capitol on August 03, 2026 in Washington, DC. The Senate is starting its final week before their five-week summer recess and are expected to hold a vote on the nomination of President Donald Trump's nominee for Attorney General, Todd Blanche, in the coming days. (Photo by Kevin Dietsch/Getty Images)

WASHINGTON, DC - AUGUST 03: U.S. Senate Majority Leader John Thune (R-SD) walks into his office at the U.S. Capitol on August 03, 2026 in Washington, DC. The Senate is starting its final week before their five-week summer recess and are expected to hold a vote on the nomination of President Donald Trump's nominee for Attorney General, Todd Blanche, in the coming days. (Photo by Kevin Dietsch/Getty Images)

WASHINGTON, DC - AUGUST 03: U.S. Senate Majority Leader John Thune (R-SD) talks to reporters as he walks into his office at the U.S. Capitol on August 03, 2026 in Washington, DC. The Senate is starting its final week before their five-week summer recess and are expected to hold a vote on the nomination of President Donald Trump's nominee for Attorney General, Todd Blanche, in the coming days. (Photo by Kevin Dietsch/Getty Images)

WASHINGTON, DC - AUGUST 03: U.S. Senate Majority Leader John Thune (R-SD) talks to reporters as he walks into his office at the U.S. Capitol on August 03, 2026 in Washington, DC. The Senate is starting its final week before their five-week summer recess and are expected to hold a vote on the nomination of President Donald Trump's nominee for Attorney General, Todd Blanche, in the coming days. (Photo by Kevin Dietsch/Getty Images)