By Alexander Cornwell, Parisa Hafezi and Jeff MasonTEL AVIV/DUBAI/WASHINGTON (Reuters) - Israel and Iran kept up their attacks, killing and wounding civilians and raising concern among world leaders at a G7 meeting in Canada this week that the biggest battle between the two old enemies could lead to a broader regional conflict.

The conflict between Israel and Iran continues on Day 4 (Monday) with both sides launching a barrage of drones and missiles at military and residential sites. Tehran reportedly struck close to Haifa port in Israel,

Israel and Iran have traded more missile attacks despite international calls for a halt to the fighting, with neither country showing signs of backing down as the conflict between the regional foes raged for a third day.

Israeli citizens were ordered to head to bomb shelters on Friday night amid retaliatory missile strikes from Iran.

President Trump rejected an Israeli plan in recent days to kill Iran's Supreme Leader Ayatollah Ali Khamenei, a senior U.S. official told USA TODAY.

Israel and Iran have traded missile strikes for a third straight day. Israel on Sunday hit targets in Tehran including the Defense Ministry and sites it claims are tied to Iran’s nuclear program.