No one was injured, according to the Qatari Ministry of Defense.
President Donald Trump announced "major combat operations" against Iran on Saturday, with daytime strikes in the joint U.S.-Israel attack targeting military and government sites, officials said.
On Sunday, Iranian state television confirmed that Ayatollah Ali Khamenei was among those killed by airstrikes in Tehran on Saturday.
Iran is responding to the U.S.-Israeli operation with missile and drone attacks targeting Israel, regional U.S. bases and Gulf nations. American diplomatic facilities have also been attacked.
In Lebanon, Israel is intensifying its long-running strike campaign against the Iranian-aligned Hezbollah militia.
Watch special coverage on Nightline, "War with Iran," each night on ABC and streaming on Disney+ and Hulu.
Qatari air forces shot down two aircraft they claim were coming from Iran, the Qatari Ministry of Defense said Monday.
"The Ministry further emphasizes the Qatar Armed Forces possess full capabilities and resources to safeguard the state's sovereignty and lands, and to respond firmly to any external threat," the Qatari Defense Ministry said in a statement.
There are U.S. military assets in Qatar.
-ABC News' Kirit Radia
No injuries resulted from an incident that sparked a large fire at the U.S. embassy compound in Kuwait earlier Monday, according to a U.S. official.
The cause of the fire was thought to be an Iranian drone strike, a second official said, noting that the incident was still being investigated.
Staff at the embassy were ordered to return to their residences and shelter-in-place when the fire started, leaving few if any employees inside the main embassy building at the time, according to officials.
The embassy has canceled all appointments for U.S. visas and American Citizen Services until further notice, per a security alert, which adds that information on how American citizens in Kuwait may obtain an emergency passport for travel is forthcoming.
-ABC News' Shannon K. Kingston
More than 70 missile and drone attacks on the Iraqi city of Erbil have been reported in recent days, Iraqi Foreign Minister Fuad Hussein said Monday.
Iraq has become a "victim of this war," Hussein said he told the United Arab Emirates foreign minister in a phone call after the reported strikes, noting that different parties to the conflict were carrying out attacks on Iraqi territory.
The strikes targeted Erbil International Airport and the nearby Harir Air Base, according to a statement from the Islamic Resistance in Iraq.
-ABC News' Bader Katy
A CNN poll conducted after the U.S. and Israel launched strikes on Iran on Saturday and Sunday found that 56% of Americans feel a “long-term military conflict between the U.S. and Iran” is very or somewhat likely. The poll found that 59% of Americans disapproved of the U.S. decision to take military action in Iran.
A poll conducted by the Washington Post Sunday found that 52% of Americans opposed President Donald Trump ordering airstrikes on Iran, while 39% of Americans supported it and 9% were unsure.
Among Republicans, 81% supported Trump ordering strikes while 12% opposed them, according to the Washington Post poll. Among Democrats, 9% supported strikes while 87% opposed them. A 59% majority of independents opposed the strikes while 28% supported them.
-ABC News’ Oren Oppenheim and Emily Guskin
