Whether its a World Health Organization the Paris climate accords the JCPOA the Iran nuclear deal, 70% percent supported rejoining agreements like that.
1) accord, deal, agreement, convention, treaty 等都有协议，条款的意思，他们大致的不同之处呢？
2) supported rejoining agreements: 支持做某事，能否说成support doing sth ?
虽然词典和语法书都没提及support 可将来接动名词作宾语。但你目前在原版读物中看到了这个例句，把这个句子记下来，作为support使用方法的一个参考。不要随便质疑原版读物中动词的使用方法。
这里还有一个WR网站的一个句子也用到了support doing sth.
If I use a colon to introduce an explanation or elaboration of what Ive just said, I dont use the conjunction and. I call that wrong too and Id advise not doing it, even if some style guides support doing that.