The leaders of almost 150 countries around the world will gather in Paris at the United Nations Summit on Climate Change, which begins tomorrow (30 November), according to the international media.

At the 21st Session of the Conference members (COP 21), world leaders, including the Presidents of the United States, China, India and Member States of the European Union (EU), as the most responsible for greenhouse gas emissions, will try to reach agreement on one of the greatest challenges of the 21st century – saving the planet from devastating climate change.

Two weeks ago, Paris was the target of terrorist attacks, HRT reports that security measures are at the highest level, and the military will be present at every step of the conference.

Observers at the summit will address the issues which will be topic of discussion, and as the “BBC” reported that due to the recent terrorist attacks, leaders are more likely to reach a new climate change agreement.

It is expected that the summit, which last until December 11 will bring together some 40,000 people.

In the meantime, on the eve of the UN summit, the march for global climate will begin, and the first protests were held in the capital of the Philippines, Manila and Brisbane, Australia, which, as reported by HRT is the first country in the world when it comes of emissions per citizen.