Iraq says the United States has told them that the information the U.S. has "confirms the Iraqi government's statement that its territory was not used to carry out this attack".
U.S. Defense Secretary Lloyd Austin says that the United States will continue to defend troops and interests. He also says that those who carried out the rocket attack in Iraq will be held accountable.
Kata'ib Hezbollah, an Iran-backed militia, announces that they have agreed to ceasefire operations against United States interests in Iraq.
U.S. Defense Secretary Mark Esper says American troops withdrawing from Syria will go to western Iraq, where the U.S. military will continue to conduct operations against the Islamic State to prevent its resurgence.
An unnamed United States official says evidence suggests the drones approached Saudi Arabia from the northwest from Iraq or Iran, contrary to the Houthi militants' claim that the drones were launched from Yemeni territory. Three experts cited by CNN say the official's evidence is not conclusive.
A U.S. federal judge blocks until June 20 the release in Syrian Democratic Forces-controlled territory of a dual-nationality Saudi-American citizen alleged to have joined ISIL. The man, who is now held for nine months in Iraq, was planned to be released by the U.S. military – with a new cell phone, some food and water and $4,210 in cash, but with no identification – as soon as tomorrow.
United States President Barack Obama, at the Gulf Cooperation Council Summit in Saudi Arabia, says the United States will continue to deter and confront aggression against Gulf Arab states; joins others in warning the fragile cease-fire in Syria is on the verge of collapse; pledges vigilance about Iran's destabilizing activities in the Middle East; wants Gulf allies to offer more democratic reforms and improve human rights; and, says the U.S. and its Gulf partners should wait to see whether Iraq can resolve its political crisis before committing more financial aid which is impeding the fight against ISIL.
U.S. Chairman of the Joint Chiefs of Staff Joseph Dunford makes a proposal to President Barack Obama to increase the number of American troops in Iraq, so as to help the Iraqi Army with advisors closer to the front lines and to recapture Mosul, which fell to ISIL in June 2014.
The U.S. House of Representatives, defying a veto-threat by President Barack Obama, overwhelmingly passes legislation to suspend the Obama administration's program to admit 10,000 Syrian and Iraqi refugees into the country. The bill will now face a vote in the U.S. Senate.
The U.S. deploys around a dozen A-10 ground-attack planes to Turkey's southern Incirlik Air Base. A U.S. military official said the deployment had "added capability" to the coalition's efforts against ISIL in Iraq and Syria.
Iraq War: The United States has lost a total of 15 troops in Iraq this month, making it the deadliest month for U.S. forces in Iraq since June 2009, when 14 soldiers were killed fighting the Iraqi insurgency.