News of Iran reportedly offered to mediate between Yemen's Houthis and Saudi Arabia helped to bring oil prices lower. Trump's brief social media post said only that the ceasefire took effect immediately, adding: “Do not break it!” Key points and original sources are listed below.

• News of Iran reportedly offered to mediate between Yemen's Houthis and Saudi Arabia helped to bring oil prices lower.S1

• Trump's brief social media post said only that the ceasefire took effect immediately, adding: “Do not break it!”S2