Iran and Israel traded attacks early Thursday as their war continued to intensify nearly a week after it began.

As the attacks by Iran and Israel continue into their sixth day, here's a look at what we know about the conflict, and if the US will deploy troops.

Israel’s sophisticated air defense system has in the past fended off attacks from Gaza, Lebanon, Iraq, Syria, Yemen and Iran. Still, Iranian missiles have tested the multilayered network, and some projectiles have made impact.