Japan fears the radar could be a sign of China's intensions to use gas exploration platforms as military stations in the conflicted zone.
Almost 50 million Thais will cast their votes for a new constitution drafted by a committee led by the country's military junta.
The Chinese government urges Singapore to respect the general agreement that it has reached with Asean.
Tomomi Inada singled out North Korean provocations and Chinese use of "force" in territorial disputes in the review.
Military leaders from the four nations discusses the challenges they are facing to battle the Islamist militants.
The former rebel commander has vowed to tackle the grievances of the Madhesi minority in Nepal.
Manila says ground reality is difficult though the tribunal's ruling is clear.
Pushpa Kamal Dahal, better known as Prachanda will be taking oath of office and secrecy at the President's Office later in the evening on Wednesday.
Abe also appointed a new LDP executive line-up. Toshihiro Nikai was appointed as LDP secretary general.
Japanese Prime Minister Shinzo Abe described the launch as a "grave threat" to the island country.
Analysts say these new rules might create fresh conflicts if China tries to stop the American military ships from entering its territorial waters.
The election, due in parliament on Wednesday, became necessary after KP Oli resigned last month
I dare them. This is my challenge to them: let us not only talk, let's have a marathon, said Duterte.
The reshuffle comes as Abe tries to boost up economic growth and handle multiple challenges.
The agreement further establishes strong bilateral economic relationship between the two countries.