Tariff war: US, Chinese officials meet in London for second round of trade negotiations

American and Chinese officials are meeting for a second day of trade talks in London to shore up a fragile truce over tariffs. Negotiations are expected to focus on Beijing's shipments of rare earths and Washington's restrictions on chip exports. US Commerce Secretary Howard Lutnick said discussions are going well, while US President Donald Trump has also expressed optimism. Tan Si Hui reports.