(Reuters) - Highlights for U.S. President Donald Trump's administration on Monday:
NORTH KOREA
Vice President Mike Pence puts North Korea on notice, warning that recent U.S. strikes in Syria and Afghanistan showed that Trump's resolve should not be tested.
North Korea will continue to test missiles regularly and any military action against it by the United States will prompt "all-out war," a senior North Korean official tells the BBC.
China reiterates its opposition to the deployment of a sophisticated U.S. anti-missile system in South Korea.
Syria's ambassador to North Korea denounces what he calls U.S. aggression and its "history of interventions" and says sending a "message" to North Korea with an attack on a Syrian airfield was irresponsible.
North Korea did not respond this month to requests from senior Chinese diplomats, including the country's foreign minister, to meet North Korean counterparts, amid rising tension with the United States, Bloomberg reports.
RUSSIA
As Russian hopes of swift detente with the United States under Trump have fizzled, state media, which hailed his election win, have made a U-turn: On Sunday, they said he was scarier than North Korea's Kim Jong Un.
SUPREME COURT
Trump's appointee Neil Gorsuch shows himself to be a frequent and energetic questioner during U.S. Supreme Court arguments in his first day hearing cases as a justice, at one point even apologizing for talking too much.
The U.S. Supreme Court sidesteps a turbulent debate over illegal immigration, turning away an appeal by a group of asylum-seeking Central American women and their children who aimed to clarify the constitutional rights of people who the government has prioritized for deportation.
JAPAN
Pence will meet with Japan's Deputy Prime Minister Taro Aso on Tuesday, kicking off talks in Tokyo that the White House hopes will open doors in Japan for U.S.-made products and attract Japanese investment for infrastructure projects in the United States.
CLIMATE CHANGE ACCORD
Trump's top advisers will meet on Tuesday to discuss whether to recommend that he withdraw the United States from the Paris climate accord, a White House official says.
PAKISTAN
Trump's national security adviser, H.R. McMaster, meets Pakistan's prime minister and army chief and emphasizes "the need to confront terrorism in all its forms", while praising democratic and economic development.
TURKEY
Trump calls Turkish counterpart Tayyip Erdogan to congratulate him on winning a referendum expanding his authority, sources in Erdogan's palace say.