Dhaka, Feb. 16 -- Saudi Arabia will host the leaders of four Arab countries at a summit on February 20 to discuss President Donald Trump's proposal for a US takeover of Gaza, a source with knowledge of the preparations said on Friday.The leaders of Egypt, Jordan, Qatar and the United Arab Emirates will attend the summit, to take place ahead of an Arab League meeting in Cairo one week later on the same issue, the source said.Speaking on condition of anonymity, another source said Palestinian president Mahmud Abbas would also attend.Trump sparked a global outcry with his proposal for the United States to "take over" the Gaza Strip and to move more than two million Palestinians out of the war-devastated territory, citing Egypt or Jordan as pos...