North Korea's last two missile tests ended in failure, raising questions whether the US military could be using cyber methods to disrupt North Korea tests, CNN reported.
Vice President Mike Pence sent another clear warning to North Korea on Wednesday, telling personnel aboard a Japan-based US aircraft carrier that "all options are on the table" when dealing with the Stalinist regime.
His remarks also coincided with an embarrassing USA admission on Tuesday that an aircraft carrier Trump said 10 days ago was sailing to waters off the Korean Peninsula was in fact heading in the opposite direction.
"We are with you 100 per cent", he told the premier.
Pence heads for Indonesia later on Wednesday.
Pence's visit to Indonesia is an important step "to reconfirm" the strategic partnership between the US and Indonesia, Sumpter said.
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Degrading North Korea's missile capability via hacking is a tactic that is actively being pursued by the USA military, according to public statements and congressional testimony by current and former members of the armed forces.
However, he also said the USA will "continue to work diligently" with Japan, China and other allies in the region to "bring economic and diplomatic pressure to bear on" North Korea.
It came ahead of a visit by Pence to the largest mosque in Indonesia, which has the world's biggest Muslim population, where he will hold a multi-faith dialogue.
"If the U.S.is planning a military attack against us, we will react with a nuclear pre-emptive strike by our own style and method", a North Korean official told the BBC on Monday.
Vice President Mike Pence avoided a direct answer when asked if the U.S. used any cyber or electronic technology to sabotage Sunday's North Korean missile test.
He said the Trump administration would work with ASEAN on security issues, trade and freedom of navigation in the South China Sea.
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However, 39 percent of voters did give him good marks when asked how he was handling the economy and job creation. Trump's approval rating at 43 percent and his disapproval at 49 percent.
Pence's first engagement in Indonesia was morning tea with Jokowi at the presidential palace.
Japan and the US have outlined a path forward for economic talks between the countries.
Pence spoke as uncertainty continues to swirl about the USA plan of action regarding North Korea, which conducted yet another failed missile test on Sunday as the country celebrated the birthday of patriarch Kim Il-Sung.
The trade deficit with Japan was $69 billion past year.
The US vice president said they could eventually result in a bilateral trade deal, though offered no specific time frame.
At the inaugural meeting, Aso and Pence established the framework for future talks, which will focus on three areas: trade and investment strategy; cooperation in economic and structural policies; and sectoral cooperation.
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Mr Trump has said that will not happen, and "all options are on the table" in dealing with Pyongyang. He said that the nuclear deal is another example of "buying off a power who has nuclear ambitions".
White House Press Secretary Sean Spicer said Wednesday that China's decision to restrict coal shipments to Pyongyang was "encouraging" and said Beijing "continued to have both economic and political influence" on North Korea.