乌俄两国总统将于明斯克举行会谈
Ukrainian President Petro Poroshenko is due to take part in talks with his Russian counterpart, Vladimir Putin, at a summit in Minsk, capital of Belarus.
乌克兰总统佩特罗·波罗申科将与俄罗斯总统弗拉基米尔·普京举行会谈，此次峰会在白俄罗斯首都明斯克举行。
The meeting comes amid rising tension between the two countries over Ukraine's military campaign against pro-Russian separatists.
Ukraine said on Monday that its troops had captured 10 Russian servicemen in eastern Ukraine.
Russia has repeatedly denied supporting the rebels.
More than 2,000 people have died in months of fighting between Ukrainian forces and separatists in Donetsk and Luhansk regions.
The two regions declared independence from Kiev following Russia's annexation of the southern Crimean peninsula from Ukraine in March.
Snap elections
The BBC's David Stern in Kiev says Tuesday's talks are under the auspices of（由……赞助或主办） the Moscow-led Eurasian Customs Union, which also includes Belarus and Kazakhstan, and that it is still unclear whether Mr Putin and Mr Poroshenko will meet separately.
The pair last met briefly in June at the D-Day commemorations.
The talks come hours after Mr Poroshenko dissolved parliament and announced snap elections for 26 October.
In a televised address, he said many current MPs were backers of ousted President Viktor Yanukovych and that the majority of Ukrainians wanted a new parliament.