ST. PETERSBURG, Russia (AP) -- The threat of missiles over the Mediterranean is weighing on world leaders meeting on the shores of the Baltic this week - and eclipsing economic battles that usually dominate when the Group of 20 leading world economies convenes.
Men at the forefront of the geopolitical standoff over Syria's civil war will be in the same room for meetings Thursday and Friday in St. Petersburg, Russia: President Barack Obama, Russian President Vladimir Putin, French President Francois Hollande, U.N. 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 to expect at this year's summit of the G-20, nations that represent two-thirds of the world's population, 85 percent of its GDP and its leading armies:
Western bombs are unlikely to fall on Syrian government targets during this gathering. The U.S. 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 U.S. Congress to weigh in first.
In the meantime, Obama and Hollande are likely to come under pressure and criticism from opponents of intervention. The U.N.'s Ban will press for diplomatic action, amid resistance from Russia and China to any U.N.-mandated military moves.
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 action would be rash. But he said he doesn't exclude supporting U.N. action - if it's proven that the Syrian government used poison gas on its own people. And oil price volatility resulting from fears of an international Syria war will be on many minds.
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 harboring of Edward Snowden, the National Security Agency contractor who exposed U.S. surveillance of emails and phone calls of Americans and foreigners. The U.S. strongly opposes arrests of political opponents and a new law against gay "propaganda."
Body language may be key to understanding where the U.S.-Russia relationship is going: Will Obama and Putin shake hands? Will they make small talk over dinner at Peter the Great's resplendent Peterhof Palace? Will other leaders take sides?
The goal of some leaders at this G-20 is to get Google and other major cross-border companies to pay more taxes and stop 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 G-20, with all the major government decision-makers at the table. Some leaders also want to crack down on 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 U.S. Federal Reserve's expected moves to wind down stimulus measures.
That expectation has pushed up long-term U.S. interest rates, which has in turn led investors to pull out of developing countries and invest in U.S. assets instead. The leaders of Russia and Brazil and others may appeal for the U.S. 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.