The Corfu Incident occurred in 1923 when an Italian general was murdered on Greek territory. In retaliation, Italian dictator Benito Mussolini ordered the bombardment and occupation of the Greek island of Corfu. This was an early test of the League, showing its weakness when dealing with aggression by a major power.

The CTBT is a multilateral treaty that bans all nuclear explosions, for both civilian and military purposes, in all environments.

CENTO failed to act collectively during wars involving Pakistan.

Pakistan borders China and, at the time, was close to contested Soviet-influenced regions.

The first formal summit of the BRIC grouping was held in Yekaterinburg, Russia, on June 16, 2009. Prior to this, foreign ministers had met on the sidelines of the UN General Assembly.

In 2008–2009, G20 leaders agreed on a $4 trillion stimulus to revive economies and reform financial systems during the global financial crisis.

Cuba was suspended in 1962, though the suspension was lifted in 2009; however, Cuba does not participate.

Fiji was suspended after a military coup but rejoined in 2014.

The Lisbon Treaty enhanced EU governance and expanded Parliament’s powers.

Solar PV has become the fastest-growing renewable technology globally.