The US Transportation Security Administration (TSA) has banned all liquids, gels, aerosols, and powders from direct flights between the United States and Russia. Delta Airlines posted a notice on its site notifying its customers of the rule change, which is effective immediately. TSA rules already prohibit carry-on liquids, gels, and aerosols to no larger than 3.4 ounces per container (about 100mL), and all such products must be placed in a clear 1 quart (roughly 0.95 liter) bag for screening.