Former Japanese Foreign Minister Fumio Kishida has stressed the need to closely watch developments following the US-North Korea summit on Tuesday.
Kishida is chairman of the ruling Liberal Democratic Party's Policy Research Council.
Kishida told reporters on Wednesday that he welcomes the first-ever summit between the 2 countries.
He added the most important thing is whether progress is made in resolving pending problems such as North Korea's nuclear and missile issues and the abduction of Japanese nationals.
He said US President Donald Trump brought up the abductions during the summit but it's not clear how North Korean leader Kim Jong Un responded.
Kishida said if necessary Japan should consider holding a summit with North Korea to get back all the abductees.