In Afghanistan, three NATO soldiers were killed by roadside bombs in past 24 hours while Afghan and international forces killed more than 20 militants. <br/><br/>Two NATO-led International Security Assistance Force (ISAF) soldiers were killed in roadside blast in eastern region while a US soldier was killed in similar attack in southern Afghanistan yesterday. <br/><br/>In another incident, a car blast rocked killed an army officer in Kunduz province of northern Afghanistan today. Violence has escalated in all parts of Afghanistan while US is deliberating upon the need for extra troops and a new approach.<br/>