In 2012, when M23 rebels appeared poised to seize control of a major city in eastern Congo, western countries suspended aid to put pressure on Rwanda to withdraw its support.

A conflict that has raged for decades reached a flashpoint this week when rebels backed by Rwanda marched on a key Congolese city in a bid to occupy territory and exploit minerals.

A Rwanda-backed militia seized the pivotal Congolese city of Goma this week, threatening a new humanitarian crisis after decades of fighting.

U.S. Secretary of State Marco Rubio called for a urgent cease-fire in the conflict in eastern Democratic Republic of Congo saying Washington was "deeply troubled" by a recent escalation in the fighting.

Rwanda-backed rebels claimed they captured eastern Congo’s strategic city of Goma, the hub of a region containing trillions of dollars in mineral wealth that remains largely untapped, the Associated Press reported.

Rebels claim to have captured the key city of Goma in the DRC, as the decades-long conflict becomes even more volatile. Sky News takes a look at what's going on.

France expresses its solidarity regarding the Democratic Republic of Congo and condemns actions by Rwanda in the country, French Foreign Minister Jean-Noel Barrot said on Monday.

GOMA, Democratic Republic of Congo - Rwandan President Paul Kagame blasted criticism of his country's role in eastern Democratic Republic of Congo where rebels his government backs have seized its largest city,

In June last year, Rwanda's government spokesperson Yolande Makolo hit out about the presence of mercenaries in eastern DR Congo, saying it was a violation of the Geneva Conventions, which prohibit the use of hired combatants. In response, Congolese government spokesperson Patrick Muyaya dismissed what he called Rwanda's perennial complaint.

The United Nations expressed deep concern at reports of M23 rebels and Rwandan troops advancing south towards the Congolese city of Bukavu on Thursday, as the militants sought also to assert their control over east Congo's largest city Goma.

East African Community leaders on Wednesday called for an immediate ceasefire in the Democratic Republic of Congo, where government forces are fighting rebel group M23, while aid agencies say the clashes are deepening the already dire humanitarian crisis there.