National Security Adviser Ajit Doval chaired the Delhi Regional Security Dialogue on Afghanistan here on Wednesday. NSAs and Secretaries of Security Councils of Iran, Kazakhstan, Kyrgyzstan, Russia, Tajikistan, Turkmenistan, Uzbekistan took part in the dialogue. India hosted the dialogue to firm up a common approach for practical cooperation in confronting increasing threats of terrorism, radicalisation and drug trafficking following the Taliban’s takeover of Kabul.