Seoul: South Korea and the United States are expected to announce their decision to suspend large-scale combined military exercises this week amid a dialogue with North Korea.

The allies are likely to include a "snapback" clause in the announcement, a government source says, hinting that the exercises would resume should the communist regime fail to deliver on its denuclearisation commitment.

After his historic summit with North Korean leader Kim Jong-un in Singapore on Tuesday, US President Donald Trump said he will stop "provocative, inappropriate and expensive" war exercises with the South, which Pyongyang has decried as an invasion rehearsal.