An extension of the US-China trade truce, agreed upon at an unscheduled meeting between the two countries’ top economic officials, underscores a willingness to contain trade tensions, according to analysts who deemed it a positive signal for this week’s presidential summit. While the rollover extends the truce by only two months, the analysts said it provided businesses with a measure of short-term certainty while raising the stakes for the next round of talks to determine whether the truce can...