Yemen’s Houthi militia said it launched air attacks in southern Israel Tuesday in response to the “brutal Israeli-American aggression in Gaza.” Separately, Israel said it thwarted air attacks but did not disclose the source. This comes after Saudi Arabia said four of its soldiers died last week while fighting Houthi rebels on its border with Yemen.

The U.S. announced this week it is sending an additional 300 troops to the Middle East to “support regional deterrence efforts.”