Spanish and Catalan authorities should revert to the constitution to settle their differences, Egypt’s Foreign Ministrysaid in a statement yesterday.The statement followed an escalation of tensions over Catalonia’s independence from Spain, after Spanish Prime Minister Mariano Rajoy decided on Saturday that he would seek parliamentary approval to reshuffle the entire Catalan government. Catalonia’s parliament will meet today to decide “whether to hold a session to formally proclaim the republic of Catalonia,” according to Reuters.