This report synthesises findings from 2 peer-reviewed papers addressing the following research question: How does the adversarial contrastive learning approach compare to cross-lingual pre-training methods like mBERT in low-resource rumor detection accuracy on the XQuAD benchmark. Recent advancements in Large Language Models (LLMs) have significantly influenced the landscape of language and speech research. Despite this progress, these models lack specific benchmarking against state-of-the-art (SOTA) models tailored to particular languages and tasks. 9 claims were extracted from source literature; 9 were independently verified against retrieved documents. An automated multi-reviewer quality assessment produced a score of 9.0/10. This report is a machine-generated literature synthesis and does not constitute original research.Research goal: How does the adversarial contrastive learning approach compare to cross-lingual pre-training methods like mBERT in low-resource rumor detection accuracy on the XQuAD benchmark?Autonomous literature synthesis. Automated review score: 9.0/10. Full text and citation available at Assignee Research.