Russian Tanks near Ukraine border have crossed the line on Monday causing an apparent incursion to the latter country that is still struggling to reestablish its sovereignty on its own territory, Washington Post reported.

Just a day before a high-stakes summit in Belarus, Russian tanks have penetrated its border and intensified the constant threat Russia has on Ukraine though Russian separatists are losing ground battle.

Moscow has adamantly denied the penetration of Russian tanks near the Ukraine border, but the media have revealed that a number of armored vehicles entered the area near the Sea of Azov and even went as far as the rebel-held city of Donetsk.

A day before Russian tanks invaded Ukraine, Russia reportedly sent a group of humanitarian aid tracks to Ukrainian territory. Apparently, Moscow received international condemnation since the purpose of its gesture remains unclear.

Despite the condemnation the first convoy of Russian tanks that entered Ukraine received, the Russian government announced that it would send a second group of combat-ready tanks.

The invasion of Russian tanks in Ukraine has since complicated and intensified the constant threat in the largest country within Europe, which has been in chaos for the last five months.

Many are doubting the possible peace agreement between Russian President Vladimir Putin and Ukrainian President Petro Poroshenko when they finally to Minsk, Belarus to attend the summit, which aims to sort out the currently unwavering conflict.

Nonetheless, Russian officials maintain that amid the issues the entrance of Russian tanks into the Ukrainian border has ignited, Putin and Poroshenko can still agree to end the impending chaos since both leaders have earlier expressed their hopes for peace.

Meanwhile, Col. Andriy Lysenko, Ukraine's National Security Council spokesman, confirmed Monday that 10 Russian tanks entered Ukraine's border, along with two armored vehicles and two trucks, reported TIME.

The Russian tanks were said to bear flags of the Donetsk separatist rebels, and they managed to cross the Scherbak border and shelled nearby city Novoazovsk overnight.

The incursion is believed to be Russia's move to penetrate Mariupol - a major port on the Azov Sea - in an attempt to establish a link between Moscow and Crimea.

It isn't clear whether Russia's gesture is related to Ukraine's Sunday celebration of its independence from Moscow since 1991.

Nonetheless, Poroshenko has announced that the Ukraine government is willing to increase its military spending just so they can defend themselves from any attack from the Russian rebels.