Sri Lanka’s besieged presidential office will reopen on Monday, police said, days after anti-government demonstrators were flushed out in a military crackdown that triggered international condemnation. Widespread public anger over the island’s unprecedented economic crisis saw protesters storm and occupy the colonial-era building earlier this month. Soldiers were forced to rescue then-president Gotabaya Rajapaksa from his nearby residence on the same day, with the leader fleeing to Singapore and resigning days later. Troops armed with batons and automatic weapons cleared the 92-year-old presid…