Contracts

—Pre-war contracts between allied and associated nations, excepting the United States, Japan and Brazil, and German nationals, are canceled except for debts for accounts already performed.

Opium

—The contracting powers agree, whether or not they have signed and ratified the opium convention of January 23, 1912, or signed the special protocol opened at The Hague in accordance with resolutions adopted by the third opium conference in 1914, to bring the said convention into force by enacting within twelve months of the time of peace the necessary legislation.

Missions

—The allied and associated powers agree that the properties of religious missions in territories belonging or ceded to them shall continue in their work under the control of the powers, Germany renouncing all claims in their behalf.

SECTION 11.

Air Navigation

—Aircraft of the allied and associated powers shall have full liberty of passage and landing over and in German territory; equal treatment with German planes as to use of German airdromes, and with most favored nation planes as to internal commercial traffic in Germany.

SECTION 13.—