How long has Pres. Moon been working on his diplomacy?

Choices:
A. One year
B. Two months
C. Six months
D. not enough information
One year
SEOUL, SOUTH KOREA — During his first year in office, South Korean President Moon Jae-in’s persistent pursuit of diplomacy, often working in parallel with U.S. President Donald Trump’s “maximum pressure” campaign, played a significant role in persuading North Korea to engage in talks to end its nuclear program.
“Before the extreme measures might have been chosen by the United States, he gave diplomacy another chance to succeed,” said Bong Young-shik, a political analyst with the Yonsei University’s Institute for North Korean Studies in Seoul.
A year ago this week, Moon, a former human rights lawyer and candidate for the progressive Democratic Party, won a special presidential election held after former conservative President Park Geun-hye was impeached for her involvement in a bribery and corruption scandal. This year, Park was sentenced to 24 years in prison during criminal trial related to the scandal in which she was charged with abuse of power, coercion and bribery.
Moon assumed power at a time of increasing tensions, not just concerning North Korea’s accelerated nuclear and ballistic missile tests, but also China’s imposing of informal economic sanctions against South Korea for deploying the U.S. THAAD missile defense system, and the Trump administration’s talk of possible military action to end the North’s efforts to develop a nuclear armed intercontinental missile that could strike the U.S. mainland.
In his inaugural address in May 2017, Moon promised to engage in shuttle diplomacy with Washington, Beijing and Pyongyang to work out a peaceful solution to the growing crisis.
In a July speech in Berlin, President Moon laid out his vision for inter-Korean reconciliation that called for peaceful co-existence of the two Korean governments, but also said that denuclearization of the Korean Peninsula is “the absolute condition for peace.”
But unlike past progressive South Korean governments that provided unconditional economic assistance, the Moon administration complied with economic sanctions in place and offered only cooperation on humanitarian aid and exchanges. Seoul also balanced its outreach efforts with maintaining strong support for the U.S. alliance, for joint military deterrence, and for imposing increasingly harsh U.S.-led economic sanctions against North Korea.