CAMBODIA " BALANCE OF MENACES " A CHUBBY LITTLE MAN IN A DARK BLUE SUIT STRODE INTO THE SPORTS STADIUM OF THE STEAMY CAMBODIAN CAPITAL OF PNOMPENH (PRONOUNCED NOM-PEN) LAST WEEK, MOUNTED THE PLATFORM, AND BEGAN HARANGUING THE ASSEMBLED CROWD IN A WHINY, HIGH-PITCHED VOICE . THE SPEAKER WAS PRINCE NORODOM SIHANOUK, NEUTRALIST, MERCURIAL RULER OF CAMBODIA, AND HE HAD CALLED THE RALLY TO ANNOUNCE IN EFFECT THAT THE U.S . WAS WORKING TO UNDERMINE HIS REGIME . TURNING THEATRICALLY TO THE THRONG, SIHANOUK ASKED WHETHER THE NATIONAL HONOR DID NOT DEMAND THAT CAMBODIA REJECT ANY FUTURE HELP FROM THE AMERICANS . WHEN HIS SUBJECTS ROARED OBEDIENT APPROVAL, THE PRINCE ORDERED : " SO BE IT . " SIHANOUK MIGHT CHANGE HIS MIND AGAIN, AS HE HAS BEFORE . IN A FORMAL NOTE TO WASHINGTON, HE CALLED FOR A HALT TO ALL AMERICAN ECONOMIC AND MILITARY AID, WHICH IN THE PAST EIGHT YEARS HAS AMOUNTED TO $366 MILLION . AND SO THE U.S . ALREADY STRIVING TO SAVE WAR-TORN SOUTH VIET NAM AND " NEUTRAL " BUT TOTTERING LAOS FROM THE REDS FACED ANOTHER MESS IN SOUTHEAST ASIA . SHAKEN NEIGHBOR . WHAT WAS AILING THE PRINCE ? A SUSPICIOUS, EMOTIONAL, FRENCH-EDUCATED DESCENDANT OF CAMBODIA'S MEDIEVAL KHMER KINGS, HE ONCE PERFORMED SLAPSTICK PARTS IN MOVIES (WHICH HE PRODUCED HIMSELF) AND HAS OFTEN PLAYED SLAPSTICK POLITICS . FRIENDS SERIOUSLY REPORTED LAST WEEK THAT TWO CONTRIBUTING REASONS FOR SIHANOUK'S BAD MOOD MIGHT BE THAT 1) HE HAD BEEN CRASH-DIETING TO LOSE 15 LBS . IN TEN DAYS, AND 2) THE U.S . TRANSFERRED A FORMER MILITARY ADVISORY CHIEF WITH WHOM THE PRINCE ENJOYED PLAYING VOLLEYBALL . THE PRINCE HIMSELF ACCUSED THE U.S . OF SUPPORTING A CLANDESTINE RADIO, ON SOUTH VIET NAM SOIL, RUN BY THE PRINCE'S POLITICAL OPPOSITION (THE U.S . DENIED THE CHARGE) . BUT, ABOVE ALL, THE PRINCE TALKS OF THE " INEVITABILITY " OF COMMUNIST CHINA'S TAKEOVER OF SOUTHEAST ASIA, HENCE MAY BE TRYING TO SAVE HIMSELF BY COZYING UP TO THE RED DRAGON . WHAT PRECIPITATED HIS LATEST PERFORMANCE COULD WELL HAVE BEEN THE OVERTHROW AND ASSASSINATION OF HIS LATE NEIGHBOR, SOUTH VIET NAM'S NGO DINH DIEM . ALTHOUGH SIHANOUK AND DIEM WERE BITTER ENEMIES, THE PRINCE WAS SHAKEN BY DIEM'S DEATH AND ATTRIBUTED IT TO THE CUTOFF OF DIEM'S AMERICAN AID . POSSIBLY DETERMINED NEVER TO GET HIMSELF ON THE SAME VULNERABLE SPOT, SIHANOUK MOVED QUICKLY TO LESSEN HIS DEPENDENCE ON THE U.S . OPENING TO THE SEINE . FOR ALL HIS ECCENTRIC BEHAVIOR, SIHANOUK HAS ALSO SOMETIMES PROVED HIMSELF A SHREWD POLITICIAN . SINCE INDEPENDENCE FROM FRANCE TEN YEARS AGO, HE HAS JAILED HOME-GROWN COMMUNISTS AND WOOED HIS RED-HOT YOUNG LEFTIST CRITICS INTO THE GOVERNMENT WHILE AT THE SAME TIME MAINTAINING WARM RELATIONS WITH RUSSIA AND RED CHINA . SIHANOUK LAST WEEK PERFORMED ANOTHER TYPICALLY SLIPPERY GYRATION . INSTEAD OF RUSHING RIGHT INTO PEKING'S ARMS, HE TURNED TO HIS OLD COLONIAL TUTOR, FRANCE, AND ASKED HER TO HELP REPLACE U.S . AID . SAID THE PRINCE : " FOR OUR COUNTRY, LIBERATED FROM THE U.S . AND WHICH THE COMMUNIST POWERS DO NOT WISH TO TAKE IN CHARGE, IT COULD BE THE HOUR OF FRANCE . " THE INVITATION WAS ANOTHER POTENTIAL OPENING FOR CHARLES DE GAULLE, WHO WANTS TO WHEEL AND DEAL IN THE AREA OF FRANCE'S OLD INDO-CHINA EMPIRE (HE KEEPS SUGGESTING A " NEUTRALIZED " VIET NAM, HINTED LAST WEEK THAT FRANCE MAY ESTABLISH DIPLOMATIC RELATIONS WITH COMMUNIST NORTH VIET NAM) . BUT WHETHER PARIS WILL FILL THE GAP TO BE LEFT BY THE ELIMINATION OF A $30 MILLION ANNUAL U.S . DOLE REMAINS TO BE SEEN . FRANCE HAS BEEN SUPPLYING CAMBODIA ONLY ONE TENTH THE U.S.'S CONTRIBUTION, MOSTLY TO MAINTAIN A 300-MAN FORCE TRAINING THE CAMBODIAN ARMY . AT WEEK'S END THE PRINCE CLIMAXED HIS PERPLEXING THEATRICS BY CALLING IN THE PRESS CORPS, DELIVERING A MEANDERING MONOLOGUE INTERSPERSED WITH GIGGLES . PROUDLY, HE ANNOUNCED THAT RED CHINA HAD OFFERED HIM MILITARY SUPPORT . " I THINK I HAVE ACHIEVED A BALANCE OF MENACES, " HE SAID . " THE MENACE OF THE IMPERIALISTS AND THEIR LACKEYS IS COUNTERBALANCED BY THE MENACE OF COMMUNIST CHINA, OUR NO . 1 FRIEND . " BUT HE INDICATED THAT HE WOULD HAVE ONLY FOUR CHINESE CIVILIAN ADVISERS AND NO CHINESE MILITARY ADVISERS : " EVERYWHERE IN OUR ARMY THERE WILL BE ONLY ONE POWER HELPING US FRANCE . " ADDED THE PRINCE : " I DO NOT LIKE TO BE A SATELLITE . I LIKE TO BE FREE . " SERVING CHAMPAGNE ALL AROUND, HE URGED THE CORRESPONDENTS TO DRINK UP BECAUSE (JOKINGLY REFERRING TO IMPENDING AUSTERITY) " IN A FEW MONTHS I WON'T BE ABLE TO OFFER CHAMPAGNE .