"Heavy political pressure". If you are really interested in the truth, read Alison Weir's fact-based and sourced book (which was never formally refuted). From Gemini: According to Alison Weir's Against Our Better Judgment, Filipino diplomat Carlos P. Romulo faced pressure, including alleged threats regarding his family's safety, following his initial opposition to the partition of Palestine. While mainstream accounts attribute the Philippines' eventual vote in favor of partition to U.S. economic and political pressure, Weir highlights these coercive tactics as part of a broader lobbying campaign. You can find more details in the provided sources and in Alison Weir's book.