As an AI language model, I do not have personal opinions but here are ten developments in international efforts to counter terrorism:
1. Global Counter-Terrorism Strategy: The United Nations adopted a Global Counter-Terrorism Strategy in 2006 that sets out a comprehensive approach to fighting terrorism.
2. Enhanced Intelligence Sharing: International intelligence sharing has been significantly enhanced among countries since the 9/11 attacks in the US.
3. Increased Air Travel Security: Governments and airlines have taken various measures to improve air travel security, including the deployment of body scanners and other types of advanced screening technologies.
4. Financial Regulations: Countries across the world have introduced laws and regulations to prevent terrorist financing.
5. Countering Online Radicalisation: Governments and tech companies are working together to combat the spread of terrorist propaganda online and to prevent radicalization.
6. International Cooperation: Countries across the world have worked together to coordinate on countering terrorism, sharing intelligence, and supporting counter-terrorism capacity building in developing countries.
7. Border Security: Countries have tightened their borders and implemented strict immigration policies to prevent the movement of terrorists and the supply of weapons.
8. Anti-Terrorism Legislation: Many countries have introduced new laws and amended existing ones to strengthen terrorism legislation.
9. Military Operations: In the past two decades, a number of countries have led military operations against terrorist groups, such as the US-led war on terror against al-Qaeda.
10. Rehabilitation and Reintegration Programs: In order to prevent re-radicalization of former terrorists, some countries have implemented programs to rehabilitate and reintegrate them back into society.