It’s 155 and counting, according to the UN. That’s the number of countries expected to sign up to the Paris Agreement to tackle climate change on Friday.

All major emitters bar Russia are listed as attending, while Kuwait, the United Arab Emirates and Iran will also participate. No word on Saudi Arabia or 2012 UN climate summit hosts Qatar.

Expect a tsunami of announcements this week from countries, companies and civil society. Some may be new, a lot may be repeats of previous commitments. But the intention is clear: to make some noise.