Ukraine's military is preparing to repel a possible assault by Russian-backed rebels in the east following reports of Russian military reinforcements crossing the border.
Ukraine's President Petro Poroshenko said Monday in an interview with the German daily Bild that the country is ready for total war.
Ukraine's military is beefing up its defenses just a few kilometers from rebel-held territory in the Luhansk region.
Private Sergei Eava with the 39th battalion says the Ukraine soldiers have to be prepared.
“We received information that our guys were being shelled … yesterday with artillery and grads [rockets],” Eava said.
The captain and commander of the new checkpoint, who asked to be called Andriy, says they have plenty of ammunition but could use more men.
“We came here two days ago. We didn’t have any conflicts here with the other side yet, but they say that there are small groups working here, about 10 people in a group," Captain Andriy said. "We received this intelligence information.”
A Ukrainian soldier suddenly fires his machine gun toward rebel positions in front of a group of journalists, saying, “Warning shots.”
Frequent target of rebel fire
The post comes under frequent rebel fire and was hit by a grad rocket the day before, although no one was injured.
Senior Mortar Gunner Vyachelav says they are ready to fight off an assault.
“Yes, they’ve strengthened us and strengthened us quite well. They are hardening everything. So, if there is an attack, we will be prepared to repel it,” he said.
Captain Andriy Slota, squad commander, says they have new munitions, but the men are tired.
“It’s time to end this singing and dancing and decide whether to move forward [militarily] or solve this on some legal level to let people go [demobilize soldiers]. Or, just return our country to us and let people go," Slota said. "Enough is enough. The time has come.”
Moscow has repeatedly denied directly supporting the rebellion in eastern Ukraine, and has described Russian troops seen fighting alongside pro-Russian separatists in the east as volunteers.
The rebels, fighting against the pro-Western government in Kyiv, said they fear it is the Ukrainian forces who are planning an offensive.
NATO comments on buildup
Meanwhile, NATO Secretary General Jens Stoltenberg says Russia has launched a "serious" military buildup both inside Ukraine and along its shared border, deploying troops and sophisticated equipment, including air defense systems.
Speaking Tuesday in Brussels, Stoltenberg urged Moscow to pull back its troops and "contribute to a peaceful settlement" in Ukraine, where pro-Russian separatists have been fighting Ukrainian forces in the country's east.
U.S. Defense Secretary Chuck Hagel said Russia's "dangerous" actions have done more to coalesce the NATO alliance than any one thing. He said Russia's behavior will continue to require responses.
Putin US trying to 'subdue' Russia
Addressing a meeting of supporters in Moscow on Tuesday, President Vladimir Putin accused the United States of seeking to "subdue" Russia, just days after receiving a frosty reception at the G20 meeting in Australia and following fresh accusations that Moscow is putting increasing military pressure on Ukraine.
Asked whether the United States is trying to "humiliate" Russia, Putin said the U.S. is seeking to "subdue us," to "solve their problems at our expense" and to "bring us under their control." He added that no one has ever been able to subjugate Russia, and never will.
Also Tuesday, Ukraine's Prime Minister Arseniy Yatsenyuk called on Russia to hold "serious negotiations on a neutral territory."
Over the weekend, Putin heard Western leaders, including President Barack Obama, Canadian Prime Minister Stephen Harper and Australian Prime Minister Tony Abbott, sharply criticize Russia's actions in Ukraine at the G20 summit in Brisbane, Australia.
Ukraine's military said Tuesday at least five soldiers were killed and eight wounded in fighting since Sunday.
Also, Germany's foreign minister Frank-Walter Steinmeier called on all parties to the conflict to abide by a September ceasefire agreement between Kyiv and the rebels.
Steinmeier spoke to reporters in the Ukrainian capital, ahead of a visit to Moscow.
In London, British Foreign Secretary Philip Hammond said that Russia "has to be consistently reminded of its obligations" under the agreement.
According to figures from the United Nations, the seven-month conflict in Ukraine has claimed over 4,100 lives and left nearly 10,000 wounded.
VOA Pentagon correspondent Carla Babb contributed to this report. Some information for this report comes from AP, AFP and Reuters.