A poll by the Kyodo news agency found that nearly two-thirds of Japanese voters are opposed to Abe holding a snap election, and that 42 percent of the electorate is undecided about whom to support.
They stated that North Korea's nuclear tests pose a direct challenge to the worldwide community, and expressed their strong support for Japan's position, including the complete implementation of the relevant Security Council resolutions.
Heightened tensions with North Korea have helped restore voter approval damaged by a series of scandals, and may help Abe retain his coalition's two-thirds majority in the lower house.
A weekend survey showed that 44% of voters planned to vote for Abe's Liberal Democratic Party, against just 8% for the opposition Democratic Party.
"It's really remarkable for a leader who has that much power how little he's accomplished legislatively in terms of addressing the critical problems facing the country", Professor Kingston said.
"North Korea is attempting to dismiss with a smirk the efforts towards disarmament we have assiduously undertaken over the years", he said.
The main opposition Democratic Party has been suffering in the polls, with only eight percent of voters planning to vote for them.
Koike's regional Tokyoites First no Kai group won a landslide victory in the city assembly election in July, dealing a major blow to Abe's party. "By making my position clear, I hope to add energy to the movement", she added.
In last summer's Upper House election, four opposition parties, including the Democratic Party and the Japanese Communist Party, pulled off a historic tie-up against the ruling coalition by uniting their candidates in all 32 single-seat constituencies.
"I am against such threats", said Dr Merkel, who has been openly critical of Mr Trump in the run-up to Germany's election on Sunday.
Abe, a conservative critic of the US-authored constitution, had hoped to use his time in office to revise article 9, which limits Japanese armed forces to a strictly defensive role.
Redwood: Are Abe's arrows hitting the mark? Rebalancing the spending would offset the potential negative effect on consumption from the tax rise, he said.