By Samia Nakhoul and Humeyra PamukISTANBUL/WASHINGTON, Sept 11 (Reuters) - Saudi Crown Prince Mohammed bin Salman sought assistance from President Donald Trump on Thursday to help fight Yemen's Iran-aligned Houthis, two sources familiar with the matter said on Friday, as the Houthis stepped up their threat to the Red Sea. Saudi Crown Prince Mohammed bin Salman reportedly sought assistance from President Donald Trump on Thursday to help fight Yemen’s Iran-aligned Houthis. Key points and original sources are listed below.

• By Samia Nakhoul and Humeyra PamukISTANBUL/WASHINGTON, Sept 11 (Reuters) - Saudi Crown Prince Mohammed bin Salman sought assistance from President Donald Trump on Thursday to help fight Yemen's Iran-aligned Houthis, two sources familiar with the matter said on...S1

• Saudi Crown Prince Mohammed bin Salman reportedly sought assistance from President Donald Trump on Thursday to help fight Yemen’s Iran-aligned Houthis.S2