Despite North Korea's provocations, US officials have said that the USA doesn't intend to use military force against North Korea in response to either a nuclear test or a missile launch. It may be up to his vice president, Mike Pence, to fill in the details during a visit to Asia.
In Seoul Vice President Pence on behalf of "Commander in Chief Donald Trump", said at an Easter Sunday lunch event with U.S. troops, "We're proud of you, and we are grateful to your service to the United States of America on this frontier of freedom that is South Korea".
Abe told Parliament he would exchange views on North Korea with Russian President Vladimir Putin when they hold a summit meeting later this month.
It came a day after North Korea, in an annual show of force, paraded missiles and rocket launchers through the streets of Pyongyang to mark the 105th birthday of Kim Il-sung, the country's founder.
The latest launch came a day after the North held a defiant massive military parade in Pyongyang which showcased almost 60 missiles - including a suspected new intercontinental ballistic missile.
Mr Pence noted that the United States commitment to South Korea was unwavering. "And so it's time for us to undertake all actions we can, short of a military option, to try to resolve this peacefully".
"I think there's an worldwide consensus now, including - including the Chinese - that this is a situation that just can't continue", said H.R. McMaster, hours after Pyongyang tested a ballistic missile from its eastern coast.
"It is likely that this launch is a test for a new type of missile or an upgrade so the possibility is high for further provocation in the near future", Kim Dong-Yub, a military expert at Kyungnam University's Institute of Far Eastern Studies in Seoul, said. "Our president will take action that is in the best interest of the American people".
He also said "the era of strategic patience is over" and expressed hopes that China would "do more" to help solve the problem.
The officials weren't authorized to speak publicly on the results of the policy review and requested anonymity.
Trump has said that if the Chinese were not willing to cooperate then the USA would be both willing and able to solve the problem "with or without China".
North Korea rolled out ballistic missiles and other weaponry at a huge parade Saturday and later in the day, at 5:21 p.m. ET, made a failed attempt to shoot off a missile, which exploded immediately after launch.
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The attempted launch came a day after Kim Jong Un's regime paraded a bevy of new long-range ballistic missiles at a major military display.
The Government has said it is "concerned" after reports emerged that North Korea carried out a failed missile test.
Trump added in a later tweet, "Our military is building and is rapidly becoming stronger than ever before".
The attack comes after North Korea's leadership warned the United States it was "ready to hit back with nuclear attacks" if provoked.
Trump turned to Twitter over the weekend to underscore the importance of cooperation with China on the Korean problem.
The reclusive country has tested another weapon, despite the United States president saying he will "solve the problem" if they continue. "We will see what happens!"
Pence described the missile launch as "a provocation" while Deputy national adviser K T McFarland called North Korea as a "liability and threat to everybody". The joint U.S. -South Korean military camp is just outside the 2.5-mile-wide DMZ.
Hwang and Pence are said to talk about the DPRK issues amid the growing tensions on the peninsula. "Your willingness to step forward, to serve, to stand firm without fear, inspires the nation and inspires the world".
The North fired a ballistic missile into the waters off the peninsula earlier this month.
The group brought ships that could shoot down missiles that North Korea has been testing.
While in Seoul, Pence will also meet National Assembly Speaker Chung Sye-kyun - to discuss President Trump's North Korea policy and THAAD.