Lebanon’s top security officials met with the president on Monday after a weekend of rioting in Beirut that left hundreds of people injured and damaged public and private property — violence that comes against the backdrop of a deepening political deadlock. The meeting at the presidential palace was to discuss the three months of protests that have roiled Lebanon and that over the past week turned into acts of vandalism in different parts of Beirut. On the agenda was also the formation of a joint operations to coordinate among the country’s security agencies to better deal with protesters.