Smoke rises from an explosion in Tehran.
Images captured on February 28 show blasts in Iran, Israel, and several other Middle Eastern countries as US President Donald Trump says "major combat operations" are underway against Iran.
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Aircraft on the deck of the USS Gerald R. Ford in a port on the Greek island of Crete on February 24.
Washington is currently assembling one of its largest military forces in the Middle East since the 2003 invasion of Iraq.
As US forces gather in the Middle East amid rising tensions with Iran, photographers have captured images of naval and air units on the move -- from Crete to the Azores, from Britain to Bulgaria.