Which martial art is an Olympic sport next to judo?

Greece marched twice, both first and last. Ac­cord­ing to the tra­di­tion, Greece always walk first due to its his­tor­i­cal status as the pro­gen­i­tor of the Olympic­s, while the host nation always marches last. Since in Athens Greece was also the host nation, they walked twice.

0. In response to the Amer­i­can-led boycott of the 1980 Summer Olympics in Moscow, 14 Eastern Bloc coun­tries in­clud­ing the Soviet Union boy­cotted the Games. The IOC awarded Los Angeles the Games by default, as no other city was in­ter­est­ed.

Chinese Taipei. The People's Republic of China opposes the use of "Re­pub­lic of China" or the common name "Taiwan" for the country because it would imply an ac­cep­tance of Taiwan as a sov­er­eign state. The Tai­wanese also rejected "Taiwan" as they of­fi­cial­ly still claim the sole le­git­i­mate gov­ern­ment of all of China.

Aikido is ba­si­cal­ly self defense system. Its tech­niques require that one of the prac­ti­cioners plays a role of uke (at­tack­er), while the other is tori (de­fend­er). The lack of com­pete­tive format is often crit­i­cized as the weakness of aikido, leading to weak attacks of uke and lack of realism in train­ing.