Briefly about the most important today's events in our digest of events
that have happened in Ukraine today
Poroshenko: Two more thousand Russian military enter into Ukraine
President Poroshenko announced that two thousand Russian military crossed into Ukraine again, as reported by "Ukrainski Novyny" with a reference to his interview with Bloomberg Europe TV.
"Two thousand Russian soldiers crossed into our country," Poroshenko said.
Apart from that, according to his words, some additional military equipment was brought in, including 20 tanks.
According to the information provided by the president, there are around eight thousand Russian soldiers deployed in Ukraine.
Mariupol rebels carry out saturation attacks, and move forward their equipment
Rebels have carried out saturation attacks on forward positions of Ukrainian troops in Mariupol, near the settlements of Talakivka, Pavlopol, and Sartany, and are regrouping now, the head of the Information Resistance Group, MP Dmytro Tymchuk, posted in his Facebook on January 21.
"Personnel and military equipment were sent to reinforce enemy forward forces. At least 10 rebel tanks were spotted on the front line," Tymchuk reports.
Tymchuk: Donetsk rebels receive reinforcements
New drafts have arrived in Donetsk for replacement of losses rebels suffered when fighting for the Donetsk airport in the town of Pisky, near the settlement of Spartak and near the Putyliv overpass, Dmytro Tymchuk, the head of the Information Resistance Group, wrote in Facebook on the morning of January 21.
"Two tank divisions (12 tanks in total and a mobile repair workshop) and several infantry units were sideslipped," Tymchuk announced.
Headquarters: ATO forces stifle an offensive at the 29 and 31 roadblocks; fighting is going on at the airport
Ukrainian troops have stifled a rebel offensive at the 29 and 31 roadblocks, and a battle is raging at the airport, the ATO press centre reported on the morning of January 21.
"The night in the ATO area was strained, same as yesterday. Rebels fired upon our military with all weapons available", a statement reads.
"Divisions of the armed forces are carrying out military operations near the Donetsk airport," a statement reads.
OSCE observers: Rebels shelled Debaltseve and killed 3 civilians
The OSCE special monitoring mission (SMM) has confirmed that the town of Debaltseve was shelled by Grad multiple rocket launchers from the direction of rebel-controlled Gorlivka on January 19, three civilians were killed and twelve injured.
"The SMM saw at least seven unexploded rockets (UXOs). A crater analysis performed by the SMM showed that the Grad rockets came from a western direction, the direction of 'DPR'-controlled Gorlivka," the report reads.
According to Ukrainian Armed Forces and Russian Federation Armed Forces representatives at the joint centre for control and coordination headquarters, at 07:40, on January 19, at least 30 Grad rockets hit the centre of Debaltseve (55km north-east of Donetsk) killing three civilians and wounding twelve.
The SMM also said that the rockets had caused significant damage to buildings and that the affected area covered approximately one square kilometre.
ATO press centre: 1 killed, and 40 wounded in the past 24 hours
One service member was killed in the past 24 hours in the area of the anti-terrorist operation, a spokesman for Ukrainian National Security and Defence Council, Andriy Lysenko, reported at a briefing.
He added that 40 soldiers were wounded.
Moskal: Rebels carried out 31 shell strikes on Lugansk region
Lysenko: Russian soldiers without insignia show up near Lugansk
Russia is increasing its military presence in the east of Ukraine, a spokesman for Ukrainian National Security and Defence Council, Andriy Lysenko, reported at a briefing.
He noted that Russia was increasing its military presence in the east of Ukraine. The RF managed to build up its troops in the territory of Donetsk and Lugansk regions.
A large number of soldiers without insignia were spotted near Lugansk. Around 60 tanks, over 50 armoured personnel carriers, as well as 100 military vehicles called "Tiger" were seen in Krasnodon.
Outlawed units of PRD gunmen were replaced with divisions of the RF Armed Forces in the town of Gorlivka.
Around 100 Russian tanks were concentrated near Shakhtarsk and Torez.
"This all is evidence of grave violations of Minsk agreements committed by the Russian part and of ongoing aggression against Ukraine," Lysenko asserted.
RSA: 6 people died, and 24 others wounded in the past 24 hours
6 people died, and 24 others were taken to hospital as a result of ongoing hostilities in Donetsk region on January 20, the official site of the Donetsk Regional State Administration reports. The report says that the number of the dead includes losses among both civilians and military. This is integrated information from the whole Donetsk region, including occupied territories, the report explains.
Moskal: Gunmen blow up a bridge across the Siverskiy Donets
A bridge across the Siverskiy Donets was blown up on Wednesday midday near the settlement of Stanyza Luganska, Chairman of the Lugansk Regional State Administration Gennadiy Moskal reported.
According to him it was the only river crossing connecting the government-held settlement of Stanyza Luganska with rebel-held Lugansk.
"The bridge was controlled by rebels, who put a blasting charge and blew it up. There is a whole in the middle of the bridge. The motor traffic between two cities remains disabled even though the bridge has not collapsed. Pedestrians can use the bridge, but we still have to find out whether the bridge could bear a car," Moskal reported.