China has called on all sides to exercise restraint following a string of military strikes led by the United States and the United Kingdom against the Iran-backed Houthi rebels in Yemen. The US and the UK, with the support of other allies, attacked Houthi rebel positions in Yemen overnight in response to the rebels' unprecedented attacks on international shipping in the Red Sea. "China is concerned about the escalation of tensions in the Red Sea and calls on all parties to maintain calm and exer