Terrorists remain determined to find a weakness in our defence... To stay ahead of the terrorists, I call on the international community, the private sector, and academia to share knowledge, expertise, and resources to prevent new technologies becoming lethal terrorist weapons.

Denying the rights of women and girls is not only wrong in itself; it has a serious social and economic impact that holds us all back.

Our world faces many grave challenges: Widening conflicts and inequality. Extreme weather and deadly intolerance. Security threats - including nuclear weapons. We have the tools and wealth to overcome these challenges. All we need is the will.

As we face the headwinds of our troubled and turbulent times, let us always be inspired by the legacy of Kofi Annan - and guided by the knowledge that he will continue speaking to us, urging us on toward the goals to which he dedicated his life and truly moved our world.

Plastic waste is now found in the most remote areas of the planet. It kills marine life and is doing major harm to communities that depend on fishing and tourism.