No, the speaker of Owen's poem would not agree with the idea that it is sweet and right to die for one's country.
The poem describes the horrors of war: the fear, the exhaustion, the suffering. The speaker wonders why people at home would support young men dying like this.
At the end of the poem, the speaker says the idea that it is sweet and right to die for one's country is "the old Lie."
If someone is important to another person that means they make good promises, always together, and see each other a lot. Hope this helps!!!
