Mogadishu says a deal to grant Addis Ababa access to sea in Somaliland is a violation of its sovereignty.
Despite a government offensive against the armed group, al-Shabab shows its capacity for high-level attacks.
Several passengers reportedly taken after helicopter lands in territory controlled by the armed group.
Ethiopias economy has struggled with no sea access, and an agreement to use a Somaliland port has upset its neighbour.
Al-Shabab group claimed responsibility for the attack, which came a day after a deadly car bombing in Mogadishu.
More than 50 soldiers were killed in the attack by al-Shabab fighters in May.
More than 1.6 million people could be affected by the unusually heavy seasonal rains.
People are losing their homes, livestock and farmland to the flooding in one of the poorest countries in the world.
Audiences are lapping up televised orchestra performances reviving Somali music for a new generation.
Somali authorities banned the platform, which young Somalis say the platforms is a source of livelihood for them.