A high-profile Asia security forum returns to Singapore this weekend after a two-year hiatus, with the Russian invasion of Ukraine, the U.S.-China rivalry and the threat of a nuclear test by North Korea expected to dominate discussions.Ukrainian President Volodymyr Zelenskyy will speak virtually during the Shangri-La Dialogue, where about 40 ministers and 30 senior defense officials from 42 countries are expected to attend, its organizer said.Japanese Prime Minister Fumio Kishida will deliver the keynote address on Friday evening at the conference's opening dinner. He will be the first Japa…READ FULL ARTICLE