F-16V fighter jets ordered by Taiwan are undergoing ground tests in the United States, as Washington and the American contractor come under pressure to speed up deliveries following criticism of repeated delays. Photos circulating online in recent days showed at least one Taiwan-bound F-16V Block 70 two-seat aircraft during taxi and systems checks at a US airfield, offering the clearest public indication yet that the long-delayed programme had entered a substantive testing phase. Images of the...