Trump at G7 Summit as he feuds with allies, boosts Russia; McCain slams trump for seeking Russia's re-entry to G8; Manafort and Russian ally hit with obstruction and conspiracy charges tied to alleged witness tampering; Trump on G7: "They should let Russia come back in"; Trump on G7: "They should let Russia come back in"; McCain slams Trump for seeking Russia's re-entry to G8; Trump to NFL players: suggest pardons instead of kneeling during anthem; McCain slams Trump for s showing "deference" to adversaries via Knit