WASHINGTON (Reuters) - President Donald Trump on Wednesday will deliver remarks about his decision on whether to move the U.S. embassy in Israel to Jerusalem from Tel Aviv, White House Press Secretary Sarah Saders said on Tuesday, adding that Trump is pretty solid in his thinking on the issue. Trump notified Arab leaders on Tuesday that he intends to make the major change in calls to Palestinian President Mahmoud Abbas, Jordan s King Abdullah, Egyptian President Abdel Fattah al-Sisi and Saudi Arabia s King Salman. Many of the leaders warned that unilateral U.S. steps on Jerusalem would derail a fledgling U.S.-led peace effort and unleash turmoil in the region. (This story corrects spelling of press secretary s surname to  Sanders  instead of  Saunders  in first paragraph)  