By Steve Holland WASHINGTON (Reuters) -The White House took the rare step of recognizing the role played by Saudi Arabia’s Crown Prince Mohammed bin Salman in extending a ceasefire in Yemen on Thursday ahead of what is expected to be a trip to Riyadh by President Joe Biden. White House press secretary Karine Jean-Pierre told reporters that bin Salman and Saudi King Salman deserved credit for their roles in the truce extension in Yemen’s war. “This truce would not be possible without the cooperative diplomacy from across the region. We specifically recognize the leadership of King Salman and th…