The crisis in Ukraine has sparked concern among its European neighbours, especially those ex-communist states that were also once caught in Moscow's clutches and now fear Kiev's estrangement from the bloc.
Polish President Bronislaw Komorowski cancelled a planned meeting on Monday with Ukrainian counterpart Viktor Yanukovych to instead hold top-level talks on the situation across the border.
Poland, a strong advocate of Ukraine's entry into the European Union, "will make sure that the door to Europe will always remain open to Ukraine", Komorowski told reporters after the Warsaw talks.
Several other countries in the region also expressed their concern on Monday over the mounting unrest in Ukraine, as thousands of Ukrainian demonstrators blockaded government buildings in Kiev in the hopes of forcing out those in power.
Rumours have been circulating that Ukraine will declare a state of emergency in Kiev, where demonstrators declared a general strike on Monday.
Ukrainian Foreign Minister Leonid Kozhara however assured Polish counterpart Radoslaw Sikorski in a telephone call that his government had no plans to do so.
The Lithuanian foreign ministry meanwhile summoned the Ukrainian ambassador to Vilnius on Monday to express "its concerns about the violent dispersal of peaceful demonstrators on Independence Square" in Kiev on Saturday.
It also "stressed the need to investigate and duly punish the culprits", according to a ministry statement.
Kiev surprised Europe last week by ceding to Russian pressure at the 11th hour and refusing to sign a landmark pact with the EU that would have seen it break away from former master Russia.
Ukraine's decision to scrap the Association Agreement, which had been months in the making, has unleashed a war of words between East and West recalling Cold War days and sparked some of the biggest protests seen in Ukraine in a decade.
