North Korea could carry out a missile or nuclear test, or both, around the time of President Joe Biden's nearly weeklong trip to South Korea and Japan starting Thursday, White House National Security Adviser Jake Sullivan said.The United States is prepared for "all contingencies," Sullivan told a press conference Wednesday, while underscoring the importance of Biden's first trip to the region as president in a move intended to assert "bold and confident American leadership" in the Indo-Pacific in the midst of Russia's invasion of Ukraine.The visit will "show in living color that the United …READ FULL ARTICLE