Duterte says the scheduled October military exercises would be the last joint drill with the United States.
Duterte says he would "open alliances" with China, as well as Russia and seek help in the country's drug problem.
Officials say the incidents took place while President Duterte made calls to allow Filipinos fish near Scarborough shoal.
PM Lee is scheduled to meet his Japanese counterpart Shinzo Abe and will receive the top honour for a foreign dignitary
Yasay says Duterte won "an unprecedented and resounding electoral mandate" and had to deliver a change.
Japan foreign ministry confirms that plans were being made for Duterte's visit.
Authorities say they are not sure if any ransom was paid for the release.
The critics say Hun Sen is scared of losing in the 2018 general elections.
Duterte says strong measures are necessary to prevent the Philippines from becoming a "narco-state".
The defence ministry and coast guard of Taiwan says details about the structures are highly confidential.
Duterte says European Union members had "guilt feelings" over the atrocities they committed in the past.
Chinese Foreign Ministry spokesman Lu Kang says countries in that region a general agreement to resolve conflicts through talks between the parties directly involved in it.
Hun Sen says the foreign countries had no right to criticise his administration.
Duterte says launching the crackdown was like letting "a worm out of the can".
The army deployed helicopters to airlift 20 soldiers who had been injured in the pre-dawn attack followed by an hours-long gunfight.