Welcome to OSTL: The Organization for the Study of Treaty Law

Organization for the Study of Treaty Law

An International Association of Scholars, Diplomats and Institutions

Contact Us

Schiphol Boulevard 127
1118 BG Schiphol Airport
Netherlands

Tel: +31 20 225 4525

Email: contact@universities.nl

All Inquiries

For all inquires, please fill out the form and we’ll get back to you as soon as possible.