An update from our news desk on the fighting around Donetsk:
Renewed fighting has flared up near Donetsk, despite a eight-day cease-fire between pro-Russian separatists and government forces in eastern Ukraine.
The Ukrainian military said its forces had repelled an attack on the airport of Donetsk.
The city of Donetsk is controlled by the separatists, but the airport is controlled by government forces.
Meanwhile, a convoy of trucks which Russian officials say are carrying humanitarian aid arrived in Luhansk, the other major separatist stronghold in eastern Ukraine.
The OSCE observer mission at the Russian-Ukrainian border said 220 trucks had crossed into Ukraine.
It said only 40 trucks were checked by Russian customs officials, and that none of the vehicles were inspected by the Ukrainian side or by the ICRC.
The Ukrainian government accused Russia of a "direct invastion" after a similar convoy entered Ukraine last month without permission from authorities in Kyiv.
Russia has defined the "new normal":
Meanwhile, the fighting continues in the east:
The Ukrainian military said its forces had repelled an attack on the airport in the eastern city of Donetsk by pro-Russian separatists, despite an eight-day ceasefire.
City authorities reported shelling in the area of the airport on September 13.
The city of Donetsk is controlled by the separatists, but the airport is controlled by government forces.
The military and the separatists have accused each other of repeated violations of the September 5 cease-fire agreement aimed to halt five months of fighting.
Meanwhile, dozens of trucks from a convoy which Russian officials say is carrying humanitarian aid on September 13 arrived in Luhansk, the other major separatist stronghold in eastern Ukraine.
The International Committee of the Red Cross said none of its officials is accompanying the convoy.
A similar convoy entered Ukraine last month without permission from authorities in Kyiv, sparking a protest by the Ukrainian government.
More detail from our news desk on Yatsenyuk's comments this morning:
Ukrainian Prime Minister Arseniy Yatsenyuk says the goal of Russian President Vladimir Putin is to destroy Ukraine as an independent country.
"His goal is to take the entire Ukraine ... he wants to eliminate Ukraine as an independent country," Yatsenyuk said.
Speaking at a conference attended by Western and Ukrainian lawmakers and businessmen in Kyiv on September 13, Yatsenyuk accused Putin of seeking to "restore the Soviet Union."
Yatsenyuk also said that despite a cease-fire between pro-Russian separatists and government forces to end five months of fighting in the east, "Ukraine is still in a state of war and the key aggressor is the Russian Federation."
He said "Putin wants another frozen conflict" in eastern Ukraine.
Yatsenyuk described the cease-fire agreed in Minsk on September 5 as just a "first step" to "stop a massacre."
Yatsenyuk also said Russia was "a threat to the global order and to the security of the entire Europe."
Asked about future NATO membership, Yatsenyuk said he realized the alliance was not ready now to admit Kyiv, but added: "NATO in these particular circumstances is the only vehicle to protect Ukraine."
Yatsenyuk said a new wave of economic sanctions imposed on Russia by the European Union and the United States over its role in the Ukraine conflict posed a major threat to the Russian economy.
The sanctions were announced by the United States and the EU in a coordinated move on September 12 and target Russia's energy, defense and banking sectors.
Kyiv and Western nations say there is evidence Russia is supporting the separatists in eastern Ukraine with troops and weapons. Moscow denies this, and has said it will retaliate against Western sanctions.