Israel and Iran have begun a new round of attacks, as the conflict between the two heavily armed rivals enters its fourth day.

The U.S. military has moved a large number of refueling aircraft to Europe to provide options to President Donald Trump as Middle East tensions erupt into conflict between Iran and Israel, two U.S. officials told Reuters on Monday,

The USS Nimitz and its carrier strike group are steaming west from the Pacific as part of an overall buildup of US military firepower

As the Iran-Israel conflict intensifies, the U.S. deploys the USS Nimitz aircraft carrier along with support tankers to bolster military readiness.

A resolution by Senator Tim Kaine of Virginia would require congressional approval before U.S. troops could engage in hostilities against Iran. He said Americans don’t want another “forever war.”

The conflict between Israel and Iran has forced many countries in the Middle East to close their airspace, as Israeli jets and Iranian exploding drones and missiles fly over their night skies.

U.S. stock indexes climbed and oil fell from last week's highs on Monday after conflict between Israel and Iran left crude production and exports unaffected, while investors stayed braced for a week packed with central bank meetings.