St Petersburg - They're supposed to be talking about growth and money, but the threat of war in Syria is creeping into nearly every conversation as the leaders of the world's 20 top economies huddle in Russia this week.
Men at the forefront of the geopolitical standoff over Syria's civil war sat around the same huge, ornate table on Thursday in St Petersburg, Russia: US President Barack Obama, Russian President Vladimir Putin, French President Francois Hollande, UN Secretary-General Ban Ki-moon, Turkish Prime Minister Recep Tayyip Erdogan, and Saudi Prince Saun Al Faisal al Saud, among others.
The world's unemployed and impoverished may get short shrift at this summit, though activist groups are pleading with leaders to join forces to tackle corruption and tax-avoiding corporations, in hopes that stabilizes and better distributes economic growth.
Here's a look at what's happening at the two-day summit of the G-20, nations that represent two-thirds of the world's population, 85% of its GDP and its leading armies:
Western bombs are unlikely to fall on Syrian government targets during this gathering. The US and French presidents are readying possible military strikes over what they say was a chemical weapons attack by Syrian President Bashar Assad's army, but both are waiting for the US Congress to weigh in first.
In the meantime, Obama and Hollande came under pressure and criticism Thursday from opponents of intervention, as China and EU leaders urged restraint. The UN's Ban is pressing for diplomatic action.
Putin, on his own turf and looking strong in the face of Western hesitancy to tangle militarily with the Russia-backed Assad, told The Associated Press this week that any one-sided intervention would be rash.
But he said he doesn't exclude supporting UN action - if it's proven that the Syrian government used poison gas on its own people. And China is among those warning at this summit that oil price volatility resulting from an international Syria war could threaten global economic recovery.
US-Russia body language
Even without Syria, Obama and Putin had plenty to disagree about.
Obama snubbed the Russian leader, cancelling a one-on-one meeting over lack of progress on other issues too - including Russia's harbouring of Edward Snowden, the National Security Agency contractor who exposed US surveillance of emails and phone calls of Americans and foreigners.
The US also strongly opposes arrests of political opponents and a new law against gay "propaganda".
Body language may be key to understanding where the US-Russia relationship is going. The two leaders shook hands as the summit opened, but Obama's face was stern as he watched Putin open the G20 talks. Will they relax and make small talk over over dinner at Peter the Great's resplendent Peterhof Palace? Will other leaders take sides?
The goal of some leaders at this G20 is to get major cross-border companies such as Google and Starbucks paying more taxes instead of using loopholes and tax havens.
Laudable to the general public, it's complicated both practically and politically. It would require cracking down on well-connected companies registered in Delaware or the Virgin Islands, for example.
But if any forum can tackle this, it's the G20, with all the major government decision-makers at the table. Some leaders also want to rein in so-called shadow banking and regulate hedge funds more.
Fed up with the Fed
The developing economies whose vigorous growth helped the world economy survive the financial market meltdown five years ago are now starting to falter.
And they're placing part of the blame on the US Federal Reserve's expected moves to wind down stimulus measures. China and Russia started off the summit by warning the US to consider international fallout as they set monetary policy.
That expectation has pushed up long-term US interest rates, which has in turn led investors to pull out of developing countries and invest in US assets instead.
The leaders of Russia and Brazil and others may appeal for the US to coordinate with other governments when it changes financial policy.
With Russia set to host the Winter Olympics in Sochi in five months, this summit is the place for other leaders to pressure Putin to open up his country and himself to criticism, opposition and public debate.
Activists want pressure against Russia's gay propaganda law, a law banning adoptions by Americans, and legal cases targeting Putin opponents.
The Russian leader, for his part, wants global recognition, and revenue, from these games.