1) Tuvalu
2) Guam
3) Republic of Nauru
4) Republic of Palau
Explanation:
The Republic of Palau, an island country located in the western Pacific Ocean has signed International Solar Alliance Framework agreement to become a 76th country that joined the International Solar Alliance(ISA). It was signed by Palau President Tommy Remengesau during a special ceremony at Permanent Mission of India to the United Nations (UN). ISA Framework Agreement has been ratified by a total of 54 of the 76 countries till now. Palau is a host country for 2020 edition of the ‘Our Oceans conference’. This will focus on issues such as climate change, sustainable fisheries, and marine pollution.