Authorities search for more info following deadly U.K. concert blast

Investigators are trying to establish whether a suicide bomber was working alone or as part of a network after a deadly explosion killed at least 22 people — including some children — following an Ariana Grande concert in Manchester, northern England, police said early Tuesday.  Thousands of terrified concert-goers ran for the exits as chaos unfolded after the blast at Manchester Arena, one of the largest concert venues in Europe. Greater Manchester Police are treating the incident as a terror attack and said the attacker was killed in the blast. Though nobody has claimed responsibility, a terrorism analyst from the Search International Terrorist Entities (SITE) Intelligence Group said that the Islamic State has celebrated the attack on social media.

Trump sends his first budget to Congress

President Trump is still busy on his first overseas trip as the leader of the free world, but one of the most important parts of his domestic agenda is unfolding back home. Trump sends his first budget proposal to Capitol Hill Tuesday, slashing everything from food assistance to health care. “If you’re on food stamps and you’re able-bodied, we need you to go to work,” White House Budget Director Mick Mulvaney said. “If you’re on disability insurance … and you’re not truly disabled, we need you to go back to work.”  Critics argue the proposed budget would hurt the most vulnerable parts of the country's population. Opposition to Trump's budget is likely to be strong in Congress — and not just among Democrats.

U.N. Security Council to weigh North Korea missile threat

The United Nations Security Council will hold a closed-door session Tuesday to discuss North Korea's test of a medium-range ballistic missile over the weekend that is capable of reaching several U.S. bases in the region. State-run KCNA news service on Monday reported that leaderKim Jong Un ordered mass production and deployment of the Pukguksong-2 missile. The test came one week after Pyongyang successfully tested another type of missile that it boasted was capable of reaching the U.S. armed with a nuclear warhead.

Astronauts set for spacewalk to repair ISS

A pair of astronauts aboard the International Space Station will don their spacesuits Tuesday morning to replace a data relay box that failed over the weekend. The box is one of two on the station that controls solar arrays, radiators, cooling loops and other functions, NASA said. A backup unit is working and the station's five-person crew is not in danger, but NASA said it ordered the repair to protect against a failure of the backup. Tackling the two-hour job will be Peggy Whitson – who will be making her 10th spacewalk, tying the record for most by a U.S. astronaut – and Jack Fischer. It's scheduled to begin around 8 a.m. ET.

Ousted South Korean president’s corruption trial begins

Former South Korean President Park Geun-hye’s corruption trial begins Tuesday, where she faces charges of extortion, bribery and abuse of power that could send her to jail for life. Park, 65, was arrested March 31, weeks after she was removed from office. She was impeached in December on charges which included her receiving millions of dollars in bribes from businesses. Park, the daughter of former South Korean President Park Chung-hee, was the first female president of South Korea.