Payments of interest and charges shall be made in special drawing rights to the extent possible. Contracting State who derives the relevant income may request that the competent authority of the other Contracting State grant these benefits. This information further indicates the Rotenbergs handle special projects for Putin. Model Convention is not exhaustive and should be given a very wide sense. Michael Caster is a human rights advocate, researcher and civil society consultant. The treaty text does not provide details on how states should fulfill these obligations, as the approach may vary by country. Active Viber number and email address.