Rwanda
Rwanda has accused neighbouring Democratic Republic of Congo of violating its airspace by flying a fighter jet over its territory.
The accusation comes amid growing tensions between the two after Kinshasa accused Rwanda of backing the rebel M23 group which has resumed fighting in eastern DRC.
In a statement tweeted on Wednesday, Kigali said: "The authorities in the DRC seem to be emboldened by consistent coddling by some in the international community who repeatedly heap blame on Rwanda for any and all ills in the DRC, while ignoring the transgressions originating from the DRC."
The United Nations and the United States have also said that they believe Rwanda backs the M23 group.
It is composed mainly of ethnic Tutsis, as is Rwanda's government.
In November Kinshasa apologised after one of its fighter jets – which was unarmed – briefly flew over Rwanda. It said the overflight was an accident and that the plane had been on a reconnaissance mission.
Kinshasa has yet to respond to Wednesday’s alleged overflight.
Go to video
Former DR Congo president Kabila seen in Kenya weeks after being sentenced to death
02:07
UN says the DRC-Rwanda peace deal 'is not being respected'
00:59
Congolese government and M23 to hold 6th round of talks
01:51
DRC President Tshisekedi appeals to Kagame to halt M23 violence
02:33
DRC: Joseph Kabila's death sentence sends shockwaves through Goma
01:45
Seven months after UN resolution, peace in eastern Congo remains elusive