Ramaphosa left South Africa for Argentina on Thursday to attend the G20 summit.

And huge differences loom on climate change, trade and the Khashoggi affair.

Some G-20 leaders may raise issues at the summit such as Russia's annexation of Ukraine's Crimea region and Britain's progress toward an agreement to leave the European Union, according to diplomatic sources.

Donald Trump will remain in Buenos Aires until Saturday night, leaving after a working dinner with Chinese President Xi Jinping, in which both could reach an agreement to stop an ongoing trade war between the two nations.

"We discussed multiple aspects of India-Saudi Arabia relations and ways to further boost economic, cultural and energy ties", the prime minister wrote on Twitter.

Being also the first South American country to host the summit, it organized press tours for journalists who wanted to see the nation's resorts, to acquaint themselves with its traditions and culture.

"As this is a hard moment for worldwide cooperation, I would like to appeal to the leaders to use this summit.to seriously discuss real issues such as trade wars, the tragic situation in Syria and Yemen and the Russian aggression in Ukraine", European Council President Donald Tusk told a news conference in Buenos Aires.

In less than two years, President Trump has unleashed a trade war with China, launched economic attacks on some of America's closest allies, pushed the global rules-based system to the brink and pulled his country towards the exit.

Saudi Arabia’s Crown Prince Mohammed bin Salman adjusts his robe

"Many people look at us and have doubts regarding these summits and what they're good for".

So Mr Macron is fashioning himself at this summit as the anti-Trump choice - a champion of the Paris climate accord, defender of the postwar system of global trade and crusader against multinational tax evaders.

Taking the world stage at the G20 is a welcome relief for Mr Macron, who has faced mass protests at home over rising fuel taxes that are the biggest challenge yet to his presidency.

Facing the prospect of a no-statement summit, European delegations were trying to create a common front and may come out with their own separate declaration if they can't get the US or others on board.

Mr Trump said he would not meet Mr Putin because three Ukrainian vessels and 24 sailors seized by Russian Federation in the Black Sea near Crimea had not been returned.

So far, the United States has imposed tariffs on $250 billion of Chinese imports - or about half the goods it imports from China each year - in response to Beijing's alleged theft of intellectual property and technology, as well as other trade complaints.

British Prime Minister Theresa May is fifth on the list, with 3 per cent searches.

German Chancellor Angela Merkel is finally on her way to Argentina for the Group of 20 summit after a technical problem with her plane forced her to change plans and stay overnight in Bonn. Prime Minister Narendra Modi is the second most searched leader on the search engine after US President Donald Trump. The two countries have always been at odds over the South Atlantic islands known as the Falklands in Britain and the Malvinas in Argentina.

WA steer stands at nearly 2 metres and weighs 1.4 tonnes
While Knickers is undoubtedly larger than your average steer - a neutered male - the video images are somewhat misleading. HOLY COW - you seen the size of this moo moo?! "Knickers" is a Holstein-Friesian steer, which is a dairy breed of cattle.