With renewed unrest in the eastern region of Ukraine and a ceasefire crumbling, the president of the country has declared that it is ready for "total war" with neighboring Russia as tensions between the two nations show no signs of ending.

Taking to the English version of his personal twitter account on Monday morning, Petro Poroshenko pointed the finger at Moscow and said that the Kremlin had disrespected a brief respite in the fighting on its borders.

"We are prepared for a scenario of total war," he said. He echoed the comments in an interview with German daily Bild Zeitung.

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"We don't want war, we want peace. We are fighting for EU values. Russia doesn't respect any agreement."

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Explosions and artillery fire could be heard at Donetsk airport on Monday morning, Reuters reported, as pro-Russian separatists and Ukrainian government troops continue to battle for the strategically important location.

Tensions have escalated since the annexation of Crimea by Russia back in March and the toppling of the Ukrainian government. This came after pro-European Union protests in the capital of Kiev which raged for several months with the country now torn between the grasp of Russia and Western nations.

Moscow has on many occasions denied that it is behind the pro-Russia aggression in the east of Ukraine and both sides have also denied that they are to blame for the end of the recent ceasefire.

Meanwhile, the European Union may impose sanctions on more Russian-backed separatists on Monday in the wake of a vote held in eastern Ukraine on November 2, but they are unlikely to discuss new steps against Russia itself until early December, officials said.

EU foreign ministers will discuss how to respond to the vote, which they say has no legal basis, as well as ways to launch reforms in Ukraine and engage Russia in finding a solution to the conflict, the officials said.