Poland has finalized a deal to acquire a second batch of 180 South Korean tanks under a 2022 agreement that will eventually see Warsaw boost its arsenal with almost 1,000 of the armored vehicles.

Top South Korean, U.S. and Japanese military officers are urging North Korea to cease all unlawful activities that threaten regional security, as the three nations fly advanced warplanes for a joint exercise in a show of force against the North.

Former South Korean President Yoon Suk Yeol was back in a solitary jail cell on Thursday with basic food and a khaki prison uniform after prosecutors secured a new detention warrant over his bid to impose martial law last year.

Washington has said the treatment of Glavprodukt, the only U.S. company Moscow has seized, will influence a planned reset of U.S.-Russia relations.

South Korea's chairman of of the joint chiefs of staff hosted his counterparts from the U.S. and Japan in Seoul on Friday.

South Korea, Japan and the United States conducted a joint air drill on Friday involving a U.S. B-52 strategic bomber and fighter jets of the three allies over international waters, the South's defence ministry said.

The 51st Fighter Wing said the upgraded F-16s will bring "unparalleled multi-role versatility and superior operational range" to U.S. forces in South Korea.

The restaurant allegedly imported dried ants from the US and Thailand and used them as a garnish in around 12,000 dishes.