South Korea and Vietnam said on Wednesday they agreed to cooperate closely, after the announcement of U.S. tariffs that pose a major challenge for both economies and for companies like Samsung Electronics with big investments in Vietnam.

South Korea's industry minister Ahn Duk-geun is visiting Vietnam as the two countries scramble to negotiate a reduction of threatened U.S. tariffs of 25% and 46%, respectively, that would otherwise apply in July after a global moratorium expires.

Chinese leader pledges to build strong bilateral relations with Hanoi, rejects protectionism, as he begins Asia tour aimed at projecting Beijing as a stable partner.

Xi Jinping has urged Vietnam to resist “unilateral bullying” and uphold free and open trade, as he begins a high-stakes diplomatic tour of the region’s major export-reliant economies in a bid to position his country as a stable partner in contrast to the United States.

China's President Xi Jinping called on Monday for stronger ties with Vietnam on trade and supply chains amid disruptions caused by U.S. tariffs, as he attended the signing in Hanoi of dozens of cooperation agreements between the two communist-run nations.

China's President Xi Jinping has called on Vietnam to oppose "unilateral bullying" to upkeep a global system of free trade - though he stopped short of naming the US. It comes as Xi is on a so called "charm offensive" trip across South East Asia,