The Suez Canal isn’t the only waterway having a hard time: The Wall Street Journal did a deep dive (excuse the pun) into difficulties facing the world’s main shipping arteries — the Suez Canal and Central America’s Panama Canal where together some 18% of global trade volumes crossed last year. While Houthi attacks and US-led airstrikes on targets in Yemen have caused shipping lines to divert around South Africa, slashing Suez Canal receipts, the Panama Canal is also in trouble — facing a prolonged drought that has led to a backlog of ships waiting to cross the canal.