U.S. Secretary of State Condoleezza Rice said Thursday that North Korea should return to nuclear disarmament talks and avoid a path toward further international isolation.
Secretary Rice is worried that North Korea leaving these talks will lead to them becoming more isolated as a nation. 
This statement basically summarizes one of the main points of the main statement. The system may have been fooled because the way I put things was long. 
( z1 worry :ARG0 ( z2 person :name ( z3 name :op "Rice" ) :ARG0-of ( z4 have-org-role :ARG2 ( z5 secretary ) ) ) :ARG1 ( z6 lead :ARG0 ( z7 leave :ARG0 ( z8 country :name ( z9 name :op "North" :op "Korea" ) ) :ARG1 ( z10 talk :mod ( z11 this ) ) ) :ARG2 ( z12 become :ARG1 z8 :ARG2 ( z13 isolate :ARG1 z8 :mod ( z14 nation ) :ARG2-of ( z15 have-degree :ARG1 z8 :ARG3 ( z16 more ) ) ) ) ) )