Muslim nations are condemning an attempted drone attack on Mecca as Saudi Arabia says that Islam's holiest city is a “red line” for the kingdom. The Iran-backed Houthi rebels in neighboring Yemen have been attacking Saudi Arabia and its shipping but deny targeting Mecca. Saudi Arabia, the world’s largest oil exporter, needs a safe outlet for its crude as well as military support, but a path to either one remains unclear. Despite a new Saudi defense pact with Turkey and Pakistan, officials with both countries say they have received no Saudi request for military support in response to the Houthis' escalation in recent days.

U.S. President Donald Trump has called on Ukrainian President Volodymyr Zelenskyy to halt strikes on Russian diesel fuel infrastructure, saying attacks are causing a global shortage. Trump spoke on Sunday on the sidelines of the Irish Open after diesel prices in the U.S. hit record highs. His comments came hours after large-scale drone strikes overnight killed and injured civilians in Russia and Ukraine. Ukrainian drones killed two people near an oil and industrial hub in Russia’s Tatarstan, according to local officials, while Ukrainian authorities reported on Russian drones pummeling the Black Sea port of Odesa and starting a fire near a border crossing with Poland.