At least 32 people were killed and over 100 people wounded in the blasts on Thursday.
The attack occurred on the outskirts of Ghazni, capital of the eastern province of Ghazni, which has seen regular fighting between the Taliban and government forces.
"It hasn't been easy dealing with (the children) because they believed in radicalism."
Aden is controlled by the Yemen government and its allies in a Saudi-led coalition, who are battling Shiite Huthi rebels who control the capital Sanaa and much of the north.
Kano (Nigeria): Three suicide bombers killed 19 people at a fish market in northeast Nigeria, civilian militia leaders said on Saturday, in an attack...
The Somalia-based al-Shabab extremist group quickly claimed responsibility for the attack.
"We have ten civilians martyred and over 40 wounded. One police and one special forces member were also killed," Najib Danish, deputy interior ministry spokesman, told AFP, adding that the attack was over.
Government sources have told sections of the UK media that they believe 23,000 people with extremist tendencies are living in the UK.
"It's a reminder that there is great danger of terrorism and people who would do great harm to others just because they're different," Obama told a crowd at German capital Berlin's Brandenburg Gate.
The US State Department in a statement on Thursday said it stood by Pakistan in the fight against terrorism.
Nigeria's army says two women suicide bombers blew themselves up at a market in northeast Nigeria's Madagali town, killing at least 30 people and wounding 67.