Brazil's president was following medical advice to avoid long-haul flights after hurting his head in an accident at home.

The leaders of Brazil and Cuba both canceled their attendance at this week's BRICS summit, being hosted in Russia by President Vladimir Putin. "Regrettably, as it became known today, President of Brazil Lula da Silva and President of Cuba Miguel Diaz-Canel will not be able to come due to unforeseen circumstances,

Vladimir Putin is hosting China’s Xi Jinping, India’s Narendra Modi, Turkey’s Recep Tayyip Erdogan, and Iran’s Masoud Pezeshkian among other world leaders at Kazan meeting