The Allied naval blockade caused severe shortages of food. The siege was also known as the Leningrad Blockade and the 900-Day Siege. Egypt had previously sent four warships supporting the Saudi naval blockade. A naval blockade was also enforced. Economic warfare continued&colon; the against the British naval blockade of French-controlled territory. The British naval blockade to France persisted. Hamas justified these as counter-attacks to the Israeli blockade of Gaza. Common preemptive approaches include epidural neuraxial blockade or nerve blocks. Other approaches include spinal cord stimulators, adenosine receptor blockade, and psychiatric intervention. Kennedy announces a naval blockade of Cuba. Sultanov employed most severe measures against them such as terror, blockade and famine. When the demand is rejected, the Chinese blockade the gunboat. Due to D receptor blockade, domperidone causes hyperprolactinemia. The Allies responded with an economic blockade against all of Russia. Rationing was introduced in 1940 to cope with the shortages caused by the wartime blockade.